NASA Mars Rover Curiosity Begins Arm-Work Phase

PASADENA, Calif. -- After driving more than a football field's length since landing, NASA's Mars rover Curiosity is spending several days preparing for full use of the tools on its arm.

Curiosity extended its robotic arm Wednesday in the first of six to 10 consecutive days of planned activities to test the 7-foot (2.1-meter) arm and the tools it manipulates.

"We will be putting the arm through a range of motions and placing it at important 'teach points' that were established during Earth testing, such as the positions for putting sample material into the inlet ports for analytical instruments," said Daniel Limonadi of NASA's Jet Propulsion Laboratory in Pasadena, Calif., lead systems engineer for Curiosity's surface sampling and science system. "These activities are important to get a better understanding for how the arm functions after the long cruise to Mars and in the different temperature and gravity of Mars, compared to earlier testing on Earth."

Since the Mars Science Laboratory spacecraft placed Curiosity inside Mars' Gale Crater on Aug. 5 PDT (Aug. 6 EDT), the rover has driven a total of 358 feet (109 meters). The drives have brought it about one-fourth of the way from the landing site, named Bradbury Landing, to a location selected as the mission's first major science destination, Glenelg.

"We knew at some point we were going to need to stop and take a week or so for these characterization activities," said JPL's Michael Watkins, Curiosity mission manager. "For these checkouts, we need to turn to a particular angle in relation to the sun and on flat ground. We could see before the latest drive that this looked like a perfect spot to start these activities."

The work at the current location will prepare Curiosity and the team for using the arm to place two of the science instruments onto rock and soil targets. In addition, the activities represent the first steps in preparing to scoop soil, drill into rocks, process collected samples and deliver samples into analytical instruments.

Checkouts in the next several days will include using the turret's Mars Hand Lens Imager to observe its calibration target and the Canadian-built Alpha Particle X-Ray Spectrometer to read what chemical elements are present in the instrument's calibration target.

"We're still learning how to use the rover. It's such a complex machine -- the learning curve is steep," said JPL's Joy Crisp, deputy project scientist for the Mars Science Laboratory Project, which built and operates Curiosity.

After the arm characterization activities at the current site, Curiosity will proceed for a few weeks eastward toward Glenelg. The science team selected that area as likely to offer a good target for Curiosity's first analysis of powder collected by drilling into a rock.

"We're getting through a big set of characterization activities that will allow us to give more decision-making authority to the science team," said Richard Cook, Mars Science Laboratory project manager at JPL.

Curiosity is one month into a two-year prime mission on Mars. It will use 10 science instruments to assess whether the selected study area ever has offered environmental conditions favorable for microbial life. JPL manages the mission for NASA's Science Mission Directorate in Washington.

Creative success alliance

Read more

Launch Director Hails Curiosity Landing

Omar Baez completed his eighth trip to Mars on Monday when NASA's Curiosity rover touched down perfectly inside the Gale Crater to begin a two-year geologic survey of the mysterious red planet. As with everyone else on Earth, Baez can only go to Mars remotely, but that doesn't diminish his excitement.

Nine months ago, Baez was carefully going over the details of Curiosity ahead of its launch on a United Launch Alliance Atlas V rocket. As launch director for NASA's Launch Services Program, it was up to Baez to confirm that the one-ton robotic rover was ready to make a months-long voyage through space to a planet 14 million miles away.

On Nov. 26, 2011, Baez gave his "go" to start the mission, offering his confidence that everything he had seen showed that the rover was ready. Not to mention the rocket pack that would fly through the Martian atmosphere and lower Curiosity onto the surface in a landing maneuver that had never been tried before.

Although he checked out everything several times in a processing hangar on Earth and worked closely with the rover's builders and operators from the Jet Propulsion Laboratory in Pasadena, Calif., he still had an anxious night watching the landing on TV.

"I think there's been roughly 7,000 people who have worked on this," Baez said Monday morning. "There's a personal sense of ownership and some skin that went into making this happen. So I am overjoyed. I was so ecstatic to see them succeed and see this thing on the surface."

Before the mission was launched, and knowing how difficult the entry and landing would be, Baez said he would call the flight a success if the rover landed and returned some video and photos of the barren Martian landscape. That goal has been met, but Baez said he is on to the next level of expectations from Curiosity.

"I think I'm still numb, I'm still waiting for more pictures," Baez said. "I want to see the thing roll around and rove. I'm not ready to pop the champagne corks yet." The landing buoyed the whole launch team. "Everyone's walking with a spring in their step, just having a good time," Baez said. "Overall, it's a great feeling."

Even after launching eight spacecraft to Mars, Baez' work with the red planet is not finished. The Launch Services Program is working toward the launch of the MAVEN mission, a spacecraft that will study Mars from orbit. MAVEN, short for Mars Atmosphere and Volatiles EvolutioN, is to look for clues as to why the Martian atmosphere changed and why its surface water was lost to space. It is to launch in late 2013.

Read more

NASA launches hypersonic inflatable heat shield prototype

NASA launched a novel new heat shield prototype on a successful test flight Monday (July 23), a mission that sent a high-tech space balloon streaking through Earth's atmosphere at hypersonic speeds of up to Mach 10.

The test flight blasted off atop a suborbital rocket at 7:01 a.m. EDT (1101 GMT) from NASA's Wallops Flight Facility on Wallops Island, Va. It sent a small capsule, called the Inflatable Re-entry Vehicle Experiment 3 (IRVE-3) into suborbital space, which deployed the inflatable heat shield and then plunged back down through Earth's atmosphere to splash down in the Atlantic Ocean.

The mission, according to NASA, was an unqualified success and will help shape new re-entry systems for future spacecraft.

"We had a really great flight today," James Reuther, deputy director of NASA's Space Technology Program, told reporters in a news briefing Monday (July 23). "Initial indications are we got good data. Everything performed as well, or better, than expected."

The IRVE-3 flight was designed to demonstrate how the technology could be used for heat shields during atmospheric entries on future space missions.

The successful test flight is, "a first step for how we explore other worlds," said Steve Jurczyk, deputy director of NASA's Langley Research Center in Hampton, Va.

"As far as the applicability of the technology, [we were] originally motivated to do this to allow us to potentially land more masses at Mars," said Neil Cheatwood, IRVE-3 principal investigator at Langley Research Center. "Mars is a very challenging destination. It has a very thin atmosphere — too much of an atmosphere to ignore, but not enough for us to do the things we would at other planets. That was our motivation about nine years ago when we started doing this stuff."

With inflatable heat shields, scientists may be able to land at higher altitudes on Mars, or use the IRVE-3 technology to one day carry larger payloads, including humans, to the surface of the Red Planet, Cheatwood added. 

Read more

NASA builds menu for planned Mars mission in 2030s

HOUSTON (AP) ― Through a labyrinth of hallways deep inside a 1950s-era building that has housed research that dates back to the origins of U.S. space travel, a group of scientists in white coats is stirring, mixing, measuring, brushing and, most important, tasting the end result of their cooking.

Their mission: Build a menu for a planned journey to Mars in the 2030s.

The menu must sustain a group of six to eight astronauts, keep them healthy and happy and offer a broad array of food. That’s no simple feat considering it will likely take six months to get to the Red Planet, astronauts will have to stay there 18 months and then it will take another six months to return to Earth. Imagine having to shop for a family’s three-year supply of groceries all at once and having enough meals planned in advance for that length of time.

“Mars is different just because it’s so far away,” said Maya Cooper, senior research scientist with Lockheed Martin who is leading the efforts to build the menu. “We don’t have the option to send a vehicle every six months and send more food as we do for International Space Station.”

Astronauts who travel to the space station have a wide variety of food available to them, some 100 or so different options, in fact. But it is all pre-prepared and freeze-dried with a shelf life of at least two years. And while astronauts make up a panel that tastes the food and gives it a final OK on Earth before it blasts off, the lack of gravity means smell ― and taste ― is impaired. So the food is bland.

On Mars though, there is a little gravity, allowing NASA to consider significant changes to the current space menu. That’s where Cooper’s team comes in. Travel to Mars opens the possibility that astronauts can do things like chop vegetables and do a little cooking of their own. Even though pressure levels are different than on Earth, scientists think it will be possible to boil water with a pressure cooker too.

One option Cooper and her staff are considering is having the astronauts care for a “Martian greenhouse.” They would have a variety of fruits and vegetables ― from carrots to bell peppers ― in a hydroponic solution, meaning they would be planted in mineral-laced water instead of soil. The astronauts would care for their garden and then use those ingredients, combined with others, such as nuts and spices brought from Earth, to prepare their meals.

“That menu is favorable because it allows the astronauts to actually have live plants that are growing, you have optimum nutrient delivery with fresh fruits and vegetables, and it actually allows them to have freedom of choice when they’re actually cooking the menus because the food isn’t already pre-prepared into a particular recipe,” Cooper said.

The top priority is to ensure that the astronauts get the proper amount of nutrients, calories and minerals to maintain their physical health and performance for the life of the mission, Cooper said.

The menu must also ensure the psychological health of the astronauts, Cooper explained, noting studies have shown that eating certain foods ― such as meatloaf and mashed potatoes or turkey on Thanksgiving ― improve people’s mood and give them satisfaction. That “link to home” will be key to astronauts on the Mars mission, and there are currently two academic studies looking further into the connection between mood and food. Lacking certain vitamins or minerals can also harm the brain, she said.

Jerry Linenger, a retired astronaut who spent 132 days on the Russian space station in 1997, said food is important for morale, and the monotony of eating the same thing day after day is difficult.

“You just wanted something different. I didn’t care if it was something I wouldn’t eat in a million years on Earth. If it was different, I would eat it,” Linenger said, recalling with a laugh how he would even drink up a Russian sour milk-like concoction for breakfast or drink up some borscht because it offered variety.

Already, Cooper’s team of three has come up with about 100 recipes, all vegetarian because the astronauts will not have dairy or meat products available. It isn’t possible to preserve those products long enough to take to Mars ― and bringing a cow on the mission is not an option, Cooper jokes.

To ensure the vegetarian diet packs the right amount of protein, the researchers are designing a variety of dishes that include tofu and nuts, including a Thai pizza that has no cheese but is covered with carrots, red peppers, mushrooms, scallions, peanuts and a homemade sauce that has a spicy kick.

To keep this menu going, and get the most out of any research about food sustainability on Mars, Cooper says it’s possible NASA will choose to have one astronaut solely dedicated to preparing the food ― the Emeril of the Mars mission.

Read more

NASA hopes are riding on Mars rover's tricky descent

It is the last 78 miles of a NASA rover's 154 million-mile journey to Mars that concerns Ravi Prakash the most.

That's because this is the first time that NASA - or anyone else - has ever tried to land something nearly so big as the 1-ton Curiosity rover on Mars, and because so much is riding on this particular mission.

"We've got to go from five times as fast as a speeding bullet - 13,000 mph - all the way to a screeching halt in seven minutes," said Prakash, a Texas City native who now works at NASA's Jet Propulsion Laboratory on the rover's lander team.

Five times the size of the Spirit and Opportunity rovers already on Mars, Curiosity is packed with scientific equipment: HD-resolution cameras that can also capture video; a laser than can ignite a spark on rocks 20 feet away to determine what they're made of; and other high-tech tools including an X-ray diffraction setup, a mass spectrometer, and a gas chromatograph.

With these devices the six-wheeled rover will be able to sample hundreds of layers of sedimentary rock, allowing scientists to understand how the surface of Mars changed over time, and providing a detailed history of the Red Planet and clues to whether life could have flourished there.

But it's got to get there safely at first.Adding to the pressure is that NASA is not currently planning or building a next generation rover to go to Mars. More than 200 scientists attended a NASA meeting earlier this year in Houston to discuss plans for follow-up missions, but none has been chosen.

Nail-biting time

So Curiosity, itself a decade in the works, is it for a long time."With no sense of how or when we will follow this up, and without knowing which direction our tools and techniques are evolving - yes, landing successfully is a big deal," said Mark Lemmon, a Texas A&M University planetary scientist who will help operate the rover on Mars.

Launched in November, the $2.5 billion rover will reach the upper limit of the Martian atmosphere at 12:30 a.m. CDT on Aug. 6. Almost out of rocket fuel, it will proceed directly to the planet's surface.

Then the nail-biting will begin. The capsule carrying the rover will slow as it falls through the thin Martian atmosphere, and at seven miles above the Red Planet a parachute will deploy. One mile above the surface, and at a speed of 180 mph, the parachute will separate, and thrusters will further slow the descent.

Read more

NASA Unveils Orion During Ceremony

The Orion capsule that will make the first flight test into space was celebrated Monday morning as the cornerstone of a new era of exploration for America's space program.

The spacecraft's aluminum-alloy crew pressure module arrived at NASA's Kennedy Space Center in Florida on Friday, June 29, where it will be built up into a fully functioning spacecraft ahead of a test flight slated for 2014.

"This starts a new, exciting chapter in this nation's great space exploration story," said Lori Garver, NASA deputy administrator. "Today we are lifting our spirits to new heights."

Orion will be the most advanced spacecraft ever designed. It will provide emergency abort capability, sustain astronauts during space travel and provide safe re-entry from deep space.

The 2014 uncrewed flight, called Exploration Flight Test-1 or EFT-1, will be loaded with a wide variety of instruments to evaluate how the spacecraft behaves during launch, in space and the through the searing heat of reentry.

Later Orion spacecraft will take astronauts on missions to destinations far beyond Earth, such as to an asteroid and Mars.

"Ladies and gentlemen, we're going to Mars," proclaimed U.S. Sen. Bill Nelson, D-Fla., who joined Garver and other officials to welcome the Orion spacecraft. "We know the Orion capsule is a critical part of the system that's going to take us there."

Designed with astronauts in mind, Orion will take crews beyond low-Earth orbit for the first time since 1972, when Apollo 17 completed the last moon landing. The Space Launch System, or SLS -- a gigantic rocket akin to the Saturn V that launched the Apollo spacecraft -- is being developed to launch future Orion missions to deep space. The first launch of the SLS, with Orion atop, is scheduled for 2017.

Astronaut Rex Walheim, who flew on the final space shuttle mission and has had a leading role in the development of Orion, said the capsule can be the principal spacecraft for 30 years of human exploration of the solar system.

"It's the first in a line of vehicles that can take us where we've never gone before," Walheim said. "It'll be a building block approach, we'll have to have a lander and a habitation module, but we can get there."

Although the design is reminiscent of the landmark Apollo capsule that took men to the moon, the interior of the spacecraft if significantly more advanced. Its guidance, navigation and life support equipment have seen significant improvements in size and capabilities.

"The systems on this spacecraft, it's bigger than Apollo and it has to stay in space longer than Apollo, so it has to be better than Apollo," said Bob Cabana, director of Kennedy and a former shuttle commander.

For now, the focus for NASA and Lockheed Martin, the spacecraft's builder, is on preparing this capsule for space in 2014. During the EFT-1 mission, a Delta IV-Heavy rocket from United Launch Alliance will lift the spacecraft into orbit. Its second stage will remain attached to the capsule and will be fired to raise the Orion's orbit to 3,600 miles, about 15 times higher than the International Space Station. The mission will last only a few hours, long enough to make two orbits before being sent plunging back into the atmosphere to test it at deep-space reentry speeds.

Read more

NASA details looming Mars rover landing, '7 Minutes of Terror'

In just 41 days, on August 5, NASA's Mars Science Laboratory rover will touch down on the Red Planet, and this will be no ordinary landing. In fact, NASA has dubbed the descent "Seven Minutes of Terror."

"When people look at it, it looks crazy," senior EDL engineer at the Jet Propulsion Laboratory Adam Steltzner said in a new video by NASA on the rover landing. "It is the result of reasoned engineering thought, but it still looks crazy."

The recently released video (see below) outlines exactly how crazy the feat of landing the rover actually is. Named Curiosity, the rover must tear through Mars' atmosphere, which takes up to seven minutes. However, transmitting a signal to Earth of its progress takes 14 minutes because of the distance between the planets.

"When we first get word that we've touched the top of atmosphere the vehicle has been alive or dead for at least seven minutes," Steltzner said.

In those seven minutes, NASA engineers have set up a complex sequence of procedures that must be followed in order to avoid disaster. First, they will deploy a parachute to slow the more than 1,000 mph descent. Then cutting off the chute, they'll fire up rockets to slow the vertical velocity even more, and lastly they will lower the rover on a tether into a crater to avoid a harmful dust cloud.

"If any one thing doesn't work just right, it's game over," EDL engineer Tom Rivellini said in the video.

The most complex and scientifically powerful robotic spacecraft ever built to explore the surface of another planet, Curiosity cost NASA $2.5 billion to build. It was launched last November, beginning its voyage to Mars and its mission is to look for organic compounds and signs of past or present habitability.

The rover is the size of a small car and weighs 1,982 pounds. It is equipped with 17 cameras, a 7-foot-long robot arm, and a suite of 10 state-of-the-art scientific sensors and experiments weighing 125 pounds. In contrast, NASA's hugely successful Mars Exploration Rovers, Spirit and Opportunity, each weighed about 385 pounds, including just 20 pounds of miniaturized science hardware.

Curiosity is set to touch down at 10:31 p.m. PDT on August 5.

Read more

NASA Spacecraft Detects Changes in Martian Sand Dunes

PASADENA, Calif. -- NASA's Mars Reconnaissance Orbiter has revealed that movement in sand dune fields on the Red Planet occurs on a surprisingly large scale, about the same as in dune fields on Earth.

This is unexpected because Mars has a much thinner atmosphere than Earth, is only about one percent as dense, and its high-speed winds are less frequent and weaker than Earth's.

For years, researchers debated whether sand dunes observed on Mars were mostly fossil features related to past climate, rather than currently active. In the past two years, researchers using images from Mars Reconnaissance Orbiter's High Resolution Imaging Science Experiment (HiRISE) camera have detected and reported sand movement.

Now, scientists using HiRISE images have determined that entire dunes as thick as 200 feet (61 meters) are moving as coherent units across the Martian landscape. The study was published online today by the journal Nature.

"This exciting discovery will inform scientists trying to better understand the changing surface conditions of Mars on a more global scale," said Doug McCuistion, director, NASA's Mars Exploration Program, Washington. "This improved understanding of surface dynamics will provide vital information in planning future robotic and human Mars exploration missions."

Researchers analyzed before-and-after images using a new software tool developed at the California Institute of Technology (Caltech) in Pasadena, Calif. The tool measured changes in the position of sand ripples, revealing the ripples move faster the higher up they are on a dune.

The study examined images taken in 2007 and 2010 of the Nili Patera sand dune field located near the Martian equator. By correlating the ripples' movement to their position on the dune, the analysis determined the entire dunes are moving. This allows researchers to estimate the volume, or flux, of moving sand.

"We chose Nili Patera because we knew there was sand motion going on there, and we could quantify it," said Nathan Bridges, a planetary scientist at Johns Hopkins University Applied Physics Laboratory in Laurel, Md., and lead author of the Nature paper. "The Nili dunes also are similar to dunes in places like Antarctica and to other locations on Mars."

The study adds important information about the pace at which blowing sand could be actively eroding rocks on Mars. Using the new information about the volume of sand that is moving, scientists estimate rocks in Nili Patera would be worn away at about the same pace as rocks near sand dunes in Antarctica, where similar sand fluxes occur.

"Our new data shows wind activity is indeed a major agent of evolution of the landscape on Mars," said Jean-Philippe Avouac, Caltech team leader. "This is important because it tells us something about the current state of Mars and how the planet is working today, geologically." 

Boeing, a NASA commercial crew partner, completes parachute test with United Launch Alliance rocket

The Boeing Company has completed the second parachute drop test for its Crew Space Transportation (CST) spacecraft. This latest parachute test comes as part of the company’s effort to develop commercial crew transportation capabilities to ferry U.S. astronauts to and from low-Earth orbit (LEO) and the International Space Station (ISS).

During the test, a helicopter lifted the CST-100 crew capsule to roughly 14,000 feet above the Delmar Dry Lake Bed near Alamo, Nev. Staff initiated a drogue parachute deployment sequence, and deployment of the main parachute. The capsule descended to a smooth ground landing that was cushioned by six inflated air bags, demonstrating the performance of the landing system.

"Boeing's parachute demonstrations are a clear sign NASA is moving in the right direction of enabling the American aerospace transportation industry to flourish under this partnership," Ed Mango, NASA's commercial crew program manager, says. "The investments we're making now are enabling this new path forward of getting our crews to LEO and potentially the space station as soon as possible."

Boeing engineers designed the company's CST system to be a reusable, capsule-shaped spacecraft capable of taking up to seven people, or a combination of people and cargo, to and from low-Earth orbit, including the space station. HDT Airborne Systems of Solon, Ohio, designed, fabricated, and integrated the parachute system, including the two drogue parachutes. ILC Dover of Frederica, Del., designed and fabricated the landing air bag system.

The first test, held on 3 April 2012, validated the architecture and deployment of the parachute system, characterized pyrotechnic shock loads, confirmed parachute size and design, and identified potential forward compartment packaging and deployment issues. The company inspected and re-packed the full parachute system for this second test.

"This second parachute drop test validates Boeing's innovative system architecture and deployment plan," says John Mulholland, vice president and program manager of Boeing Commercial Programs. "Boeing's completion of this milestone reaffirms our commitment to provide safe, reliable and affordable crewed access to space."

The company has scheduled additional tests to be performed in 2012 that will provide more data on elements of the spacecraft's design.

Dragon Expected to Set Historic Course

As scheduled, the mission will be the first to see a privately built and funded spacecraft rendezvous with the station. If successful, the mission is expected to pave the way toward regular operational commercial cargo missions.

"It's almost like the lead-up to Apollo, in my mind," said Mike Horkachuck, NASA's project executive for SpaceX. "You had Mercury then you had Gemini and eventually you had Apollo. This would be similar in the sense that, we're not going to the moon or anything as spectacular as that, but we are in the beginnings of commercializing space. This may be the Mercury equivalent to eventually flying crew and then eventually leading to, in the long run, passenger travel in space."

California-based Space Exploration Technologies, known as SpaceX, is preparing to launch an ambitious mission to dock its Dragon spacecraft to the space station and return it to Earth. The spacecraft will not have a crew, but will carry about 1,200 pounds of cargo that the astronauts and cosmonauts living on the station will be able to use. The capsule will go into space atop a Falcon 9 rocket also built by SpaceX.

Elon Musk, the owner of SpaceX and the company's chief designer, said his team is not taking the mission's objectives for granted, particularly since both the Dragon spacecraft and Falcon 9 rocket are relatively new to spaceflight.

"We have launched the rocket twice and the spacecraft once so they are pretty new, and the proximity operations will be our first test in space," Musk said following the Flight Readiness Review. "I think it’s important to appreciate that this is fairly tricky and it is important to remember that we are hitting a target within a few inches while it moves over 17,000 mph."

Because the mission is a test flight, the cargo is not material deemed critical to the crew, Horkachuck said. Launch is targeted for May 7 from Space Launch Complex 40 at Cape Canaveral Air Force Station in Florida, within sight of the launch pads the space shuttles used to carry the station's components into orbit. There also are several tests and reviews coming up later this month similar to those performed ahead of space shuttle missions.

If this mission is successful, the Dragon is expected to become operational and launch regular supply runs to the station. Unlike any other cargo carrier, the Dragon can bring things back to Earth, too, a boon for scientists whose research is taking place on the orbiting laboratory.

SpaceX already has two successful Falcon 9 launches to its credit, along with a history making demonstration of the Dragon capsule that in December 2010, became the first privately built and operated spacecraft to be launched to and recovered from Earth orbit.

The mission is expected to last about 21 days, Horkachuck said. 

Read more

NASA's Spitzer Finds Galaxy With Split Personality

While some galaxies are rotund and others are slender disks like our spiral Milky Way, new observations from NASA's Spitzer Space Telescope show that the Sombrero galaxy is both.The galaxy, which is a round elliptical galaxy with a thin disk embedded inside, is one of the first known to exhibit characteristics of the two different types. The findings will lead to a better understanding of galaxy evolution, a topic still poorly understood.

"The Sombrero is more complex than previously thought," said Dimitri Gadotti of the European Southern Observatory in Chile and lead author of a new paper on the findings appearing in the Monthly Notices of the Royal Astronomical Society."The only way to understand all we know about this galaxy is to think of it as two galaxies, one inside the other."

The Sombrero galaxy, also known as NGC 4594, is located 28 million light-years away in the constellation Virgo.From our viewpoint on Earth, we can see the thin edge of its flat disk and a central bulge of stars, making it resemble a wide-brimmed hat. Astronomers do not know whether the Sombrero's disk is shaped like a ring or a spiral, but agree it belongs to the disk class.

"Spitzer is helping to unravel secrets behind an object that has been imaged thousands of times," said Sean Carey of NASA's Spitzer Science Center at the California Institute of Technology in Pasadena."It is intriguing Spitzer can read the fossil record of events that occurred billions of years ago within this beautiful and archetypal galaxy."

Spitzer captures a different view of the galaxy than visible-light telescopes. In visible views, the galaxy appears to be immersed in a glowing halo, which scientists had thought was relatively light and small.With Spitzer's infrared vision, a different view emerges. Spitzer sees old stars through the dust and reveals the halo has the right size and mass to be a giant elliptical galaxy.

While it is tempting to think the giant elliptical swallowed a spiral disk, astronomers say this is highly unlikely because that process would have destroyed the disk structure. Instead, one scenario they propose is that a giant elliptical galaxy was inundated with gas more than nine billion years ago.Early in the history of our universe, networks of gas clouds were common, and they sometimes fed growing galaxies, causing them to bulk up.

The gas would have been pulled into the galaxy by gravity, falling into orbit around the center and spinning out into a flat disk. Stars would have formed from the gas in the disk."This poses all sorts of questions," said Ruben Sanchez-Janssen from the European Southern Observatory, co-author of the study. "How did such a large disk take shape and survive inside such a massive elliptical? How unusual is such a formation process?"

Researchers say the answers could help them piece together how other galaxies evolve. Another galaxy, called Centaurus A, appears also to be an elliptical galaxy with a disk inside it. But its disk does not contain many stars.

Read more

Study Finds Surprising Arctic Methane Emission Source

The fragile and rapidly changing Arctic region is home to large reservoirs of methane, a potent greenhouse gas. As Earth’s climate warms, the methane, frozen in reservoirs stored in Arctic tundra soils or marine sediments, is vulnerable to being released into the atmosphere, where it can add to global warming. Now a multi-institutional study by Eric Kort of NASA’s Jet Propulsion Laboratory, Pasadena, Calif., has uncovered a surprising and potentially important new source of Arctic methane: the ocean itself.

Kort, a JPL postdoctoral scholar affiliated with the Keck Institute of Space Studies at the California Institute of Technology in Pasadena, led the analysis while he was a student at Harvard University, Cambridge, Mass. The study was conducted as part of the HIAPER Pole-to-Pole Observations (HIPPO) airborne campaign, which flew a specially instrumented National Science Foundation (NSF)/National Center for Atmospheric Research (NCAR) Gulfstream V aircraft over the Pacific Ocean from nearly pole to pole, collecting atmospheric measurements from Earth’s surface to an altitude of 8.7 miles (14 kilometers). The campaign, primarily funded by NSF with additional funding from NCAR, NASA and the National Oceanic and Atmospheric Administration, was designed to improve our understanding of where greenhouse gases are originating and being stored in the Earth system.

During five HIPPO flights over the Arctic from 2009 to 2010, Kort’s team observed increased methane levels while flying at low altitudes over the remote Arctic Ocean, north of the Chukchi and Beaufort Seas. The methane level was about one-half percent larger than normal background levels.

But where was the methane coming from? The team detected no carbon monoxide in the atmosphere that would point to possible contributions from human combustion activities. In addition, based on the time of year, location and nature of the emissions, it was extremely unlikely the methane was coming from high-latitude wetlands or geologic reservoirs.

By comparing locations of the enhanced methane levels with airborne measurements of carbon monoxide, water vapor and ozone, they pinpointed a source: the ocean surface, through cracks in Arctic sea ice and areas of partial sea ice cover. The cracks expose open Arctic seawater, allowing the ocean to interact with the air, and methane in the surface waters to escape into the atmosphere. The team detected no enhanced methane levels when flying over areas of solid ice.

Kort said previous studies by others had measured high concentrations of methane in Arctic surface waters, but before now no one had predicted that these enhanced levels of ocean methane would find their way to the overlying atmosphere.

So how is the methane being produced? The scientists aren’t yet sure, but Kort hinted biological production from living things in Arctic surface waters may be a likely culprit. “It’s possible that as large areas of sea ice melt and expose more ocean water, methane production may increase, leading to larger methane emissions,” he said. He said future studies will be needed to understand the enhanced methane levels and associated emission processes and to measure their total contribution to overall Arctic methane levels.

“While the methane levels we detected weren’t particularly large, the potential source region, the Arctic Ocean, is vast, so our finding could represent a noticeable new global source of methane,” he added. “As Arctic sea ice cover continues to decline in a warming climate, this source of methane may well increase. It’s important that we recognize the potential contribution from this source of methane to avoid falsely interpreting any changes observed in Arctic methane levels in the future.”

Read more

A farewell to Star Trek's real life Shuttle Enterprise

It was six years after the final airing of the original Star Trek on television and the trekkie movement was alive and well. After a successful run in syndication, Paramount Pictures had announced and began script production on the franchise's first major film titled "Star Trek: The Motion Picture." The victory for show creator Gene Rodenberry and trek fans alike would be one of many in the Star Trek universe.

Fast forward less than a year to Rockwell International's facilities in Palmdale, California. Preparations to unveil to the public the first NASA Space Shuttle were underway. A formal dedication for Shuttle Constitution would be held on September 17th, 1976, on Constitution day.

Designated OV-101 (Orbiter Vehicle 101), Constitution was built to perform test flights within Earth's atmosphere. Designed without physical engines, a heat shield and many systems required for space flight, the space vehicle would never leave Earth, making it the only space shuttle never to fly in space.

While a full campaign of testing was fully underway, another campaign 3000 miles away would define Constitution forever. Momentum was building around a write-in campaign to request a name change of Shuttle Constitution. Without any official mention by The White House or President Ford's staff, over 400,000 Star Trek fans were petitioning the President to reconsider the name Constitution for America's first space shuttle. Their request was simple - call it Enterprise.

President Ford, during World War II, was stationed on the aircraft carrier Monterey, which coincidentally had served with the USS Enterprise. Stating that he was "partial to the name," he overrode the name Constitution and officially dubbed OV-101 Enterprise.

On Constitution Day, 1976, special guests along with NASA officials and President Ford dedicated the first in the fleet. Those special guests were from a not so distant television series. Joining NASA Administrator James Fletcher were Star Trek USS Enterprise crew members DeForest Kelley (Dr. "Bones" McCoy), George Takei (Mr. Sulu), James Doohan (Chief Engineer Montgomery "Scotty" Scott), Nichelle Nichols (Lt. Uhura), Leonard Nimoy (Mr. Spock), Gene Rodenberry (Series Creator), and Walter Koenig (Ensign Pavel Checkov).

Approach & Landing Tests

Less than five months after the formal dedication, Enterprise would take her maiden flight atop a Boeing 747 Shuttle Carrier Aircraft for a series of unmanned and unpowered tests to determine structural loads, handling, and monitoring of newly built ground systems. It was also an opportunity to test the ferry flight characteristics of the mated 747 and the shuttle itself. On August 12, 1977 Enterprise flew on its own for the first time with Commander Fred W. Haise, Jr. (former Apollo 13 Lunar Module Pilot) and Pilot C. Gordon Fullerton at the controls. The subsequent test flights would serve as the model for future shuttle landings after orbiting missions.

Retirement & Relocation

When all flight tests were completed, Enterprise was retired from duty. The vehicle had certain components removed which could be reused on on future shuttle missions. Enterprise then was sent on an international tour visiting the United Kingdom, France, Italy, Germany, Canada, and within the United States, California, Alabama and Louisiana. Enterprise was sent via barge to Louisiana for display during the 1984 World's Fair. While in California it was used as a fit-check to the never-used shuttle launch pad at Vandenberg Air Force Base.

On November 18, 1985 Enterprise was ferried to Washington, D.C., where it became property of the Smithsonian Institution and sat in storage until the opening of the James S. McDonnell Space Hangar at the Smithsonian's National Air & Space Museum's Udvar-Hazy Center in November of 2004.

On April 12, 2011, NASA officially announced the winning facilities that will permanently display the retired shuttle fleet. Enterprise, which was on display at the Udvar-Hazy center would be replaced by Shuttle Discovery and sent to the Intrepid Sea, Air & Space Museum in New York City.

Enterprise will depart Dulles International Airport and arrive at New York's John F. Kennedy International Airport on April 23rd, 2012 marking the first phase of relocation to the shuttle's new home. In June, Enterprise will move by barge to the Intrepid, going past such iconic landmarks including the Statue of Liberty and the World Trade Center.

"When the Enterprise touches down at JFK [Airport], it will signify the first step of its final journey to educate and inspire millions of people around the world about the groundbreaking work of the NASA space program," said U.S. Senator Charles E. Schumer (D – New York). "The Enterprise will immediately become an iconic and must-see destination in New York that will further contribute to our reputation as the greatest city in the world."

When the barge trip along the Hudson River is completed, Enterprise will be raised by crane to a place near the deck of the USS Intrepid, where it will be on public display in a temporary climate controlled facility until a permanent facility can be constructed.

Read more

12-Mile-High Martian Dust Devil Caught in Act

A Martian dust devil roughly 12 miles high (20 kilometers) was captured whirling its way along the Amazonis Planitia region of Northern Mars on March 14. It was imaged by the High Resolution Imaging Science Experiment (HiRISE) camera on NASA's Mars Reconnaissance Orbiter. Despite its height, the plume is little more than three-quarters of a football field wide (70 yards, or 70 meters).

Dust devils occur on Earth as well as on Mars. They are spinning columns of air, made visible by the dust they pull off the ground. Unlike a tornado, a dust devil typically forms on a clear day when the ground is heated by the sun, warming the air just above the ground. As heated air near the surface rises quickly through a small pocket of cooler air above it, the air may begin to rotate, if conditions are just right.

The image was taken during late northern spring, two weeks short of the northern summer solstice, a time when the ground in the northern mid-latitudes is being heated most strongly by the sun.

The Mars Reconnaissance Orbiter has been examining the Red Planet with six science instruments since 2006. Now in an extended mission, the orbiter continues to provide insights into the planet's ancient environments and how processes such as wind, meteorite impacts and seasonal frosts continue to affect the Martian surface today. This mission has returned more data about Mars than all other orbital and surface missions combined.

More than 21,700 images taken by HiRISE are available for viewing on the instrument team's website: http://hirise.lpl.arizona.edu . Each observation by this telescopic camera covers several square miles, or square kilometers, and can reveal features as small as a desk.

HiRISE is operated by the University of Arizona, Tucson. The instrument was built by Ball Aerospace & Technologies Corp., Boulder, Colo. The Mars Reconnaissance Orbiter Project and the Mars Exploration Rover Project are managed by NASA's Jet Propulsion Laboratory, Pasadena, Calif., for NASA's Science Mission Directorate, Washington. JPL is a division of the California Institute of Technology in Pasadena. Lockheed Martin Space Systems, Denver, built the orbiter. 

Read more

'Mount Sharp' On Mars Links Geology's Past and Future

One particular mountain on Mars, bigger than Colorado's grandest, has been beckoning would-be explorers since it was first sighted from orbit in the 1970s. Scientists have ideas about how it took shape in the middle of ancient Gale Crater and hopes for what evidence it could yield about whether conditions on Mars have favored life.

No mission to Mars dared approach it, though, until NASA's Mars Science Laboratory mission, which this August will attempt to place its one-ton rover, Curiosity, at the foot of the mountain. The moat of flatter ground between the mountain and the crater rim encircling it makes too small a touchdown target to have been considered safe without precision-landing innovations used by this mission.

To focus discussions about how Curiosity will explore the mountain during a two-year prime mission after landing, the mission's international Project Science Group has decided to call it Mount Sharp. This informal naming pays tribute to geologist Robert P. Sharp (1911-2004), a founder of planetary science, influential teacher of many current leaders in the field, and team member for NASA's first few Mars missions. Sharp taught geology at the California Institute of Technology (Caltech), in Pasadena, from 1948 until past his retirement. Life magazine named him one of the 10 best college teachers in the nation.

"Bob Sharp was one of the best field geologists this country has ever had," said Michael Malin, of Malin Space Science Systems, San Diego, principal investigator for two of Curiosity's 10 science instruments and a former student of Sharp's.

"We don't really know the origins of Mount Sharp, but we have plans for how to go there and test our theories about it, and that's just how Bob would have wanted it," Malin said.

Caltech Provost Edward Stolper, former chief scientist for the Mars Science Laboratory, said, "For much of his more than 50 years at Caltech, Bob Sharp was the central figure in its programs in the geological and planetary sciences. One of his major contributions was the building of a program in planetary sciences firmly rooted in the principles and approaches of the geological sciences.

"Moreover, through his own work on the Jet Propulsion Laboratory's early missions to Mars and the work of others that he influenced, he also had a major influence on planetary science and exploration at JPL. Recognition of this remarkable scientist and leader by the naming of Mount Sharp is highly fitting, and I hope it will serve to perpetuate his legacy."

The Mars Science Laboratory spacecraft was launched Nov. 26, 2011, bound for landing beside Mount Sharp inside Gale Crater on the evening of Aug. 5, PST (early Aug. 6, EST and Universal Time). The mission will use Curiosity to investigate whether the area has ever offered environmental conditions favorable for fostering microbial life, including chemical ingredients for life and energy for life.

Mount Sharp rises about 3 miles (5 kilometers) above the landing target on the crater floor, higher than Mount Rainier above Seattle, though broader and closer. It is not simply a rebound peak from the asteroid impact that excavated Gale Crater. A rebound peak may be at its core, but the mountain displays hundreds of flat-lying geological layers that may be read as chapters in a more complex history billions of years old.

Twice as tall as the sequence of colorful bands exposed in Arizona's Grand Canyon, the stack of layers in Mount Sharp results from changing environments in which layers are deposited, younger on top of older, eon after eon, and then partially eroded away.

Several craters on Mars contain mounds or mesas that may have formed in ways similar to Mount Sharp, and many other ancient craters remain filled or buried by rock layers. Some examples, including Gale, hold a mound higher than the surrounding crater rim, indicating that the mounds are remnant masses inside once completely filled craters. This presents a puzzle about how environmental conditions on Mars evolved.

Read more

NASA GRAIL Returns First Student-Selected Moon Images

PASADENA, Calif. -- One of two NASA spacecraft orbiting the moon has beamed back the first student-requested pictures of the lunar surface from its onboard camera. Fourth grade students from the Emily Dickinson Elementary School in Bozeman, Mont., received the honor of making the first image selections by winning a nationwide competition to rename the two spacecraft.

The image was taken by the MoonKam, or Moon Knowledge Acquired by Middle school students. Previously named Gravity Recovery And Interior Laboratory (GRAIL) A and B, the twin spacecraft are now called Ebb and Flow. Both washing-machine-sized orbiters carry a small MoonKAM camera. Over 60 student–requested images were taken by the Ebb spacecraft from March 15-17 and downlinked to Earth March 20.

"MoonKAM is based on the premise that if your average picture is worth a thousand words, then a picture from lunar orbit may be worth a classroom full of engineering and science degrees," said Maria Zuber, GRAIL mission principal investigator from the Massachusetts Institute of Technology in Cambridge, Mass. "Through MoonKAM, we have an opportunity to reach out to the next generation of scientists and engineers. It is great to see things off to such a positive start."

GRAIL is NASA's first planetary mission to carry instruments fully dedicated to education and public outreach. Students will select target areas on the lunar surface and request images to study from the GRAIL MoonKAM Mission Operations Center in San Diego.

The MoonKAM program is led by Sally Ride, America's first woman in space, and her team at Sally Ride Science in collaboration with undergraduate students at the University of California in San Diego. More than 2,700 schools spanning 52 countries are using the MoonKAM cameras.

"What might seem like just a cool activity for these kids may very well have a profound impact on their futures," Ride said. "The students really are excited about MoonKAM, and that translates into an excitement about science and engineering."

Launched in September 2011, Ebb and Flow will answer longstanding questions about the moon and give scientists a better understanding of how Earth and other rocky planets in the solar system formed.

NASA's Jet Propulsion Laboratory in Pasadena, Calif., manages the GRAIL mission for NASA's Science Mission Directorate in Washington. The Massachusetts Institute of Technology, Cambridge, is home to the mission's principal investigator, Maria Zuber. GRAIL is part of the Discovery Program managed at NASA's Marshall Space Flight Center in Huntsville, Ala. Lockheed Martin Space Systems in Denver built the spacecraft. The California Institute of Technology in Pasadena manages JPL for NASA. 

Read more

NASA GRACE Data Hit Big Apple on World Water Day

To highlight declines in the world's groundwater supplies, a new visualization of Earth's groundwater reserves, created in part with space data from the joint NASA/German Aerospace Center (DLR) Gravity Recovery and Climate Experiment (GRACE) mission, debuted on New York's Times Square on March 22, International World Water Day.

The 30-second animation, titled "Visualizing Seasonal and Long-term Changes in Groundwater Levels," will be on display several times each hour through April 22 on Times Square's massive Thomson Reuters and NASDAQ digital signboards. Viewers of the interactive animation are invited to use their mobile devices to submit their city and add a graph to the sign.

Netherlands designer Richard Vijgen developed the animation using GRACE data analyzed by professor Jay Famiglietti, director of the UC Center for Hydrologic Modeling at the University of California, Irvine; and from United States Geological Survey data supplied by Leonard Konikow. Vijgen was the winning entry in an international design visualization competition sponsored by the organization HeadsUP!, in collaboration with Visualizing.org. Founded by digital media artist Peggy Weil, HeadsUp! challenges designers to visualize critical global issues and create a shared sign for the public square.

Groundwater is a critical, but often overlooked, natural resource. According to a U.N. report, more than 1.5 billion people around the world depend on groundwater for their drinking water. It comes from the natural percolation of precipitation and other surface waters down through Earth's soil and rock, accumulating in cavities and layers of porous rock, gravel, sand or clay. Groundwater levels respond slowly to changes in weather and can take months or years to replenish once pumped for irrigation or other uses.

Famiglietti's analyses show that groundwater is being depleted at alarming rates in many of the world's major aquifers. "The GRACE data set is exciting, because it gives us the first global pictures of Earth's changing freshwater," he said.

The twin GRACE satellites, which celebrated their 10th year in orbit this week, measure minute changes in Earth's gravity field by measuring micron-scale variations in the separation between the two spacecraft, flying in formation 137 miles (220 kilometers) apart in low Earth orbit. These variations in gravitational pull are caused by local changes in Earth's mass. Masses of water, ice, air and solid Earth can be moved by weather patterns, seasonal change, climate change and even tectonic events such as large earthquakes. GRACE was developed by NASA's Jet Propulsion Laboratory, Pasadena, Calif.

The depletion of groundwater from large aquifers due to drought and human activities affects gravity enough to provide a signal that GRACE can measure, in concert with other remote sensing data. After accounting for other mass variations, such changes in gravity can be translated into an equivalent change in water. GRACE has been used to detect major depletion of groundwater in northern India, California's Central Valley and elsewhere around the globe.

Groundwater levels are monitored by local sensors as well as from space with GRACE, but the data are formatted for expert hydrologists, rather than concerned citizens. Underground and out of sight, the public lacks a clear indicator of changing groundwater levels. By using the GRACE satellite data, HeadsUP! offered designers the chance to visualize the water under the surface of Earth, as "seen" from space. 

Read more

What's Next For NASA?

The end of the space shuttle program does not mean the end of NASA, or even of NASA sending humans into space. NASA has a robust program of exploration, technology development and scientific research that will last for years to come. Here is what's next for NASA:

Exploration
NASA is designing and building the capabilities to send humans to explore the solar system, working toward a goal of landing humans on Mars. We will build the Multi-Purpose Crew Vehicle, based on the design for the Orion capsule, with a capacity to take four astronauts on 21-day missions.

NASA is also moving forward with the development of the Space Launch System -- an advanced heavy-lift launch vehicle that will provide an entirely new national capability for human exploration beyond Earth's orbit. The SLS rocket will use a liquid hydrogen and liquid oxygen propulsion system, which will include shuttle engines for the core stage and the J-2X engine for the upper stage.

We are developing the technologies we will need for human exploration of the solar system, including solar electric propulsion, refueling depots in orbit, radiation protection and high-reliability life support systems.

International Space Station
The International Space Station is the centerpiece of our human spaceflight activities in low Earth orbit. The ISS is fully staffed with a crew of six, and American astronauts will continue to live and work there in space 24 hours a day, 365 days a year. Part of the U.S. portion of the station has been designated as a national laboratory, and NASA is committed to using this unique resource for scientific research.

The ISS is a test bed for exploration technologies such as autonomous refueling of spacecraft, advanced life support systems and human/robotic interfaces. Commercial companies are well on their way to providing cargo and crew flights to the ISS, allowing NASA to focus its attention on the next steps into our solar system.

Aeronautics
NASA is researching ways to design and build aircraft that are safer, more fuel-efficient, quieter, and environmentally responsible. We are also working to create traffic management systems that are safer, more efficient and more flexible. We are developing technologies that improve routing during flights and enable aircraft to climb to and descend from their cruising altitude without interruption.

We believe it is possible to build an aircraft that uses less fuel, gives off fewer emissions, and is quieter, and we are working on the technologies to create that aircraft. NASA is also part of the government team that is working to develop the Next Generation Air Transportation System, or NextGen, to be in place by the year 2025. We will continue to validate new, complex aircraft and air traffic control systems to ensure that they meet extremely high safety levels.

Science
NASA is conducting an unprecedented array of missions that will seek new knowledge and understanding of Earth, the solar system and the universe. NASA has observatories in Earth orbit and deep space, spacecraft visiting the moon and other planetary bodies, and robotic landers, rovers, and sample return missions. NASA's science vision encompasses questions as practical as hurricane formation, as enticing as the prospect of lunar resources, and as profound as the origin of the Universe.


Read more

THE NEXT BIG SOLAR SYSTEM

June 21, 2011: In Sept. 1859, on the eve of a below-average solar cycle, the sun unleashed one of the most powerful storms in centuries. The underlying flare was so unusual, researchers still aren't sure how to categorize it. The blast peppered Earth with the most energetic protons in half-a-millennium, induced electrical currents that set telegraph offices on fire, and sparked Northern Lights over Cuba and Hawaii.

This week, officials have gathered at the National Press Club in Washington DC to ask themselves a simple question: What if it happens again?

"A similar storm today might knock us for a loop," says Lika Guhathakurta, a solar physicist at NASA headquarters. "Modern society depends on high-tech systems such as smart power grids, GPS, and satellite communications--all of which are vulnerable to solar storms."

She and more than a hundred others are attending the fifth annual Space Weather Enterprise Forum—"SWEF" for short. The purpose of SWEF is to raise awareness of space weather and its effects on society especially among policy makers and emergency responders. Attendees come from the US Congress, FEMA, power companies, the United Nations, NASA, NOAA and more.

As 2011 unfolds, the sun is once again on the eve of a below-average solar cycle—at least that’s what forecasters are saying. The "Carrington event" of 1859 (named after astronomer Richard Carrington, who witnessed the instigating flare) reminds us that strong storms can occur even when the underlying cycle is nominally weak.

In 1859 the worst-case scenario was a day or two without telegraph messages and a lot of puzzled sky watchers on tropical islands.

In 2011 the situation would be more serious. An avalanche of blackouts carried across continents by long-distance power lines could last for weeks to months as engineers struggle to repair damaged transformers. Planes and ships couldn’t trust GPS units for navigation. Banking and financial networks might go offline, disrupting commerce in a way unique to the Information Age. According to a 2008 report from the National Academy of Sciences, a century-class solar storm could have the economic impact of 20 hurricane Katrinas.

As policy makers meet to learn about this menace, NASA researchers a few miles away are actually doing something about it:

"We can now track the progress of solar storms in 3 dimensions as the storms bear down on Earth," says Michael Hesse, chief of the GSFC Space Weather Lab and a speaker at the forum. "This sets the stage for actionable space weather alerts that could preserve power grids and other high-tech assets during extreme periods of solar activity."

Herschel Detects Gigantic Storms Sweeping Entire Galaxies Clean

With observations from the PACS instrument on board the ESA Herschel space observatory, an international team of scientists led by the Max Planck Institute for Extraterrestrial Physics has found gigantic storms of molecular gas gusting in the centres of many galaxies.

Some of these massive outflows reach velocities of more than 1000 kilometres per second, i.e. thousands of times faster than in terrestrial hurricanes. The observations show that the more active galaxies contain stronger winds, which can blow away the entire gas reservoir in a galaxy, thereby inhibiting both further star formation and the growth of the central black hole. This finding is the first conclusive evidence for the importance of galactic winds in the evolution of galaxies.

In the distant and therefore younger Universe, many galaxies show much more activity than our Milky Way today. In commonly accepted evolutionary scenarios gas-rich galaxies merge, which triggers increased star formation as well as the growth of supermassive black holes at their centres. This increased activity, however, seems to cease fairly suddenly, effectively stalling star formation and further growth of the black hole in as little as a few million years' time. What processes could be responsible for removing all the raw material powering this activity -- around a billion solar masses -- in such a short timespan?

The solution to this riddle could be powerful winds that blow gas outwards from the centre of the galaxy. Powered by newly formed stars, shocks from stellar explosions or by the Black Hole in the galaxy's centre, these storms would remove all the gas supply from the galaxy thereby halting the same mechanisms that produced them in the first place.

read more