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February 9, 2010

NASA Radar Captures its First Haiti Image

Filed under: Universe


 

JPL’s Uninhabited Aerial Vehicle Synthetic Aperture Radar (UAVSAR) captured this false-color composite image of the city of Port-au-Prince, Haiti, and the surrounding region on Jan. 27, 2010. Port-au-Prince is visible near the center of the image. The large dark line running east-west near the city is the main airport. UAVSAR left NASA’s Dryden Flight Research Center in Edwards, Calif., Jan. 25, 2010, aboard a modified NASA Gulfstream III aircraft on a three-week campaign that will also take it to Central America.

Shortly before 5 p.m. local time on Jan. 12, 2010, a magnitude 7.0 earthquake struck southern Haiti. The earthquake’s epicenter was about 25 kilometers (15 miles) west-southwest of Port-au-Prince, close to the west (left) edge of this image. The large linear east-west valley in the mountains south of the city is the location of the major active fault zone responsible for the earthquake: the Enriquillo-Plantain Garden fault. The fault extends from the western tip of Haiti past Port-au-Prince into the Dominican Republic to the east of this image. Historical records show that the southern part of Haiti was struck by a series of large earthquakes in the 1700s, and geologists believe those were also caused by ruptures on this fault zone.
 
Satellite interferometric synthetic aperture radar measurements show that the Jan. 12 earthquake ruptured a segment of the fault extending from the epicenter westward over a length of about 40 kilometers (25 miles), leaving the section of the fault in this image unruptured. The earthquake has increased the stress on this eastern section of the fault south of Port-au-Prince and the section west of the rupture. This has significantly increased the risk of a future earthquake, according to a recent report by the U.S. Geological Survey.
 
The colors in the image reflect the three different UAVSAR radar polarizations: HH (horizontal transmit, horizontal receive) is colored red; VV (vertical transmit, vertical receive) is colored blue; and HV (horizontal transmit, vertical receive) is colored green. Like a pair of Polaroid sunglasses, these images are sensitive to different parts of the radar signal that is reflected back from Earth’s surface.
 
The HV polarization is sensitive to multiple scattering that typically occurs in vegetation – this gives the hills a green color. VV polarization is sensitive to scattering from surfaces – this gives a bluish tint to water and non-vegetated soil. Finally, HH polarization is sensitive to structures and vertical tree trunks – this gives some urban areas and vegetated regions a reddish tint. The image is roughly 20 kilometers (12.5 miles) wide in the northwest-southeast direction. North is up and radar illumination is from the southeast.

This image will be combined with other images of the same area to be acquired later this month and in the future in order to measure the motion of Earth’s surface during the time between images using a technique called interferometry.The interferometric measurements will allow scientists to study the pressures building up and being released on the fault at depth.

February 8, 2010

SDO is Set to Launch on Feb. 10

Filed under: Sun, Universe, Space Station


 
The Solar Dynamics Observatory, or SDO, is set to launch on Feb. 10 at 10:26 a.m. EST from Launch Complex 41 at Cape Canaveral Air Force Station in Florida. Weather for launch day stands at a 60 percent chance of "go" for liftoff.

A prelaunch news conference will be held at 1 p.m. on Tuesday, followed by the mission science briefing. Both will be carried live on NASA TV. Live coverage of the launch will begin at 7:30 a.m. Wednesday on NASA TV and the launch blog.

SDO’s unprecedented mission will study the sun and its dynamic behavior. Onboard telescopes will scrutinize sunspots and solar flares using more pixels and colors than any other observatory in the history of solar physics. And SDO will reveal the sun’s hidden secrets in a prodigious rush of pictures.

The Solar Dynamics Observatory (SDO) will be taking a closer look at the Sun, the source of all Space Weather. Space Weather affects not only our lives here on Earth, but the Earth itself, and everything outside its atmosphere (astronauts and satellites out in space and even the other planets).

The Sun, our closest star, is still a great mystery to scientists. SDO will help us understand where the Sun’s energy comes from, how the inside of the Sun works, and how energy is stored and released in the Sun’s atmosphere… yes, the Sun has an atmosphere! By better understanding the Sun and how it works, we will be able to better predict and better forecast the "weather out in space" providing earlier warnings to protect our astronauts and satellites floating around out there.

SDO is the first satellite under the Living with a Star (LWS) program at NASA. The spacecraft is being designed to fly for five years. However, since satellites go through a lot of testing and retesting, they often keep working long past their initial mission life. SOHO for example, which was built to fly for five years, in 2005 celebrated its 10 year anniversary in 2005!

SDO is unlike any other satellite in the universe. It will be collecting huge amounts of data everyday. In fact SDO will produce enough data to fill a single CD every 36 seconds.

Retrieval Ships Ready



NASA’s Freedom Star and Liberty Star booster recovery ships are in position. Both currently are stationed about 160 miles off the Florida coast.

The ships are waiting to tow the solid rocket boosters back to Kennedy Space Center after their descent into the ocean. They will then be scraped, painted and repaired (if necessary) and put back into service for another space shuttle launch.

The countdown remains on track for a 4:14 a.m. EST liftoff and the forecast still calls for a 60 percent favorable outlook for launch with no technical issues being reported.

Endeavour’s STS-130 Mission

Commander George Zamka will lead the STS-130 mission to the International Space Station aboard space shuttle Endeavour. Terry Virts will serve as the pilot. Mission Specialists are Nicholas Patrick, Robert Behnken, Stephen Robinson and Kathryn Hire. Virts will be making his first trip to space.

Shuttle Endeavour and its crew will deliver to the space station a third connecting module, the Italian-built Tranquility node and the seven-windowed cupola, which will be used as a control room for robotics. The mission will feature three spacewalks.

February 4, 2010

A Little Telescope Goes a Long Way

Filed under: Solar Systems


 NASA astronomers have successfully demonstrated that a David of a telescope can tackle Goliath-size questions in the quest to study Earth-like planets around other stars. Their work, reported today in the journal Nature, provides a new tool for ground-based observatories, promising to accelerate by years the search for prebiotic, or life-related, molecules on planets orbiting stars beyond our solar system.

The scientists reported on a new technique used with a relatively small Earth-based telescope to identify an organic molecule in the atmosphere of a Jupiter-size planet nearly 63 light-years away. The measurement revealed details of the exoplanet’s atmospheric composition and conditions, an unprecedented achievement from an Earth-based observatory.

The surprising new finding comes from a venerable 30-year-old, 3-meter-diameter (10-foot) telescope that ranks 40th among ground-based telescopes - NASA’s Infrared Telescope Facility atop Mauna Kea, Hawaii.

The new technique promises to further speed the work of studying planet atmospheres by enabling studies from the ground that were previously possible only through a few very high-performance space telescopes. "Given favorable observing conditions, this work suggests we may be able to detect organic molecules in the atmospheres of terrestrial planets with existing instruments," said lead author Mark Swain, an astronomer at NASA’s Jet Propulsion Laboratory, Pasadena, Calif. This can allow fast and economical advances in focused studies of exoplanet atmospheres, accelerating our understanding of the growing stable of exoplanets.

"The fact that we have used a relatively small, ground-based telescope is exciting because it implies that the largest telescopes on the ground, using this technique, may be able to characterize terrestrial exoplanet targets," Swain said.

Currently, more than 400 exoplanets are known. Most are gaseous like Jupiter, but some "super-Earths" are thought to be large terrestrial, or rocky, worlds. A true Earth-like planet, with the same size as our planet and distance from its star, has yet to be discovered. NASA’s Kepler mission is searching from space now, and is expected to find several of these earthly worlds by the end of its three-and-a-half-year prime mission.

On Aug. 11, 2007, Swain and his team turned the infrared telescope to the hot, Jupiter-size planet HD 189733b in the constellation Vulpecula. Every 2.2 days, the planet orbits a K-type main sequence star slightly cooler and smaller than our sun. HD189733b had already yielded breakthrough advances in exoplanet science, including detections of water vapor, methane and carbon dioxide, using space telescopes.

Using the new technique, the astronomers successfully detected carbon dioxide and methane in the atmosphere of HD 189733b with a spectrograph, which splits light into its components to reveal the distinctive spectral signatures of different chemicals. Their key work was development of a novel calibration method to remove systematic observation errors caused by the variability of Earth’s atmosphere and instability due to the movement of the telescope system as it tracks its target.

February 3, 2010

STS-130 Crew at Kennedy, Launch Preps in Full Swing



 
On Launch Pad 39A at NASA’s Kennedy Space Center in Florida, pressurization of the gaseous nitrogen and helium tanks on space shuttle Endeavour were completed overnight. Teams also are preparing the pad for the start of launch countdown that begins 2 a.m. EST Thursday.

The six STS-130 mission astronauts arrived at Kennedy’s Shuttle Landing Facility at about 10:10 p.m. last night. After settling into their crew quarters in the Operations and Checkout Building, they worked through the night reviewing data and equipment, including procedures to replace the ammonia lines that will be used to cool the Tranquility node. The crew now is on a sleep schedule to match their evening and overnight work hours during the mission.

A prelaunch countdown briefing will be held this morning at 10 a.m. EST and aired on NASA TV at www.nasa.gov/ntv. The participants will be NASA Test Director Jeremy Graeber, STS-130 Payload Manager Joe Delai and Shuttle Weather Officer Kathy Winters.
 
Endeavour’s STS-130 Mission 
 
Commander George Zamka will lead the STS-130 mission to the International Space Station aboard space shuttle Endeavour. Terry Virts will serve as the pilot. Mission Specialists are Nicholas Patrick, Robert Behnken, Stephen Robinson and Kathryn Hire. Virts will be making his first trip to space.
 
Shuttle Endeavour and its crew will deliver to the space station a third connecting module, the Italian-built Tranquility node and the seven-windowed cupola, which will be used as a control room for robotics. The mission will feature three spacewalks.
 
Liftoff from NASA’s Kennedy Space Center in Florida is scheduled for February 7, 2010, at 4:39 a.m. EST
 

Measuring the Sun’s Hidden Variability

Filed under: Sun


Every 11 years, the sun undergoes a furious upheaval. Dark sunspots burst forth from beneath the sun’s surface. Explosions as powerful as a billion atomic bombs spark intense flares of high-energy radiation.
 
Clouds of gas big enough to swallow planets break away and billow into space. It’s a flamboyant display of stellar power.

Almost none of the drama of Solar Maximum is visible to the human eye. Look at the sun in the noontime sky and—ho-hum—it’s the same old bland ball of light.

 

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February 2, 2010

NASA FY 2011 Budget

Filed under: Solar Systems


 

 FY 2011 Budget

› FY 2011 Budget Overview (387 Kb PDF)
› Deputy Administrator’s Remarks at the OSTP Budget Announcement (68 Kb)
› NASA Budget Details From OMB→
› Joint NASA-OSTP Factsheet (70 Kb PDF)
› Statement From Norman R. Augustine (11 Kb PDF)


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February 1, 2010

Obama may scrap NASA moon mission

Filed under: Moon


With the release of President Obama’s budget request, NASA will finally get the new marching orders, and there won’t be anything in there about flying to the moon, The Washington Post reported.
 
The US administration has planed to kill the Constellation programme of the National Aeronautics and Space Administration (NASA) that called for the re-launch of a space shuttle to the moon by 2020. The budget is a death knell for the Ares 1 rocket, NASA’s planned successor to the space shuttle.
 
According to an official, Obama’s budget will call for spending $6 billion over five years to develop a commercial spacecraft that could ferry astronauts to low earth orbit.

"The President is committed to a robust 21st century space program, and his budget will reflect that dedication to NASA. NASA is vital not only to spaceflight, but also for critical scientific and technological advancements," White House spokesman Nick Shapiro said on Sunday.

"The expertise at NASA is essential to developing innovative new opportunities, industries, and jobs. The President’s budget will take steps in that direction," he was quoted as saying.

The Obama administration believes that new funding for the commercial programme would create up to 1,700 jobs, which could help offset the expected loss of 7,000 jobs in Florida when the space shuttle is retired next year.

 

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January 29, 2010

NASA Airborne Radar to Study Quake Faults in Haiti

Filed under: Space Shuttle


In response to the disaster in Haiti on Jan. 12, NASA has added a series of science overflights of earthquake faults in Haiti and the Dominican Republic on the island of Hispaniola to a previously scheduled three-week airborne radar campaign to Central America.

NASA’s Uninhabited Aerial Vehicle Synthetic Aperture Radar, or UAVSAR, left NASA’s Dryden Flight Research Center in Edwards, Calif., on Jan. 25 aboard a modified NASA Gulfstream III aircraft.

During its trek to Central America, which will run through mid-February, the repeat-pass L-band wavelength radar, developed by NASA’s Jet Propulsion Laboratory, Pasadena, Calif., will study the structure of tropical forests; monitor volcanic deformation and volcano processes; and examine Mayan archeology sites.

After the Haitian earthquake, NASA managers added additional science objectives that will allow UAVSAR’s unique observational capabilities to study geologic processes in Hispaniola following the earthquake. UAVSAR’s ability to provide rapid access to regions of interest, short repeat flight intervals, high resolution and its variable viewing geometry make it a powerful tool for studying ongoing Earth processes.

"UAVSAR will allow us to image deformations of Earth’s surface and other changes associated with post-Haiti earthquake geologic processes, such as aftershocks, earthquakes that might be triggered by the main earthquake farther down the fault line, and the potential for landslides," said JPL’s Paul Lundgren, the principal investigator for the Hispaniola overflights.

"Because of Hispaniola’s complex tectonic setting, there is an interest in determining if the earthquake in Haiti might trigger other earthquakes at some unknown point in the future, either along adjacent sections of the Enriquillo-Plantain Garden fault that was responsible for the main earthquake, or on other faults in northern Hispaniola, such as the Septentrional fault."



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January 28, 2010

Flight Readiness Review Gives ‘Go’ for Feb. 7 Shuttle Launch

Filed under: Space Shuttle


During Wednesday’s Flight Readiness Review at NASA’s Kennedy Space Center in Florida, NASA managers agreed that the shuttle, crew, support teams and procedures are ready for flight to deliver the Tranquility node and cupola to the International Space Station at 4:39 a.m. EST Feb. 7.
 
"We reviewed all the aspects of the shuttle and space station… the processing in Florida has gone exceptionally well ," said Bill Gerstenmaier, associate administrator for Space Operations, during a post-FRR news conference Wednesday. "This is really a complicated mission … if you take a look through the press kits you’ll gain an appreciation of what will be going on at the station."
 
International Space Station Program Manager Mike Suffredini agreed, "This is the primary objective of this mission — the installation and activation of this module." Suffredini addressed the issues with the ammonia hoses and how the spares had been rebuilt and tested, keeping the launch date on target. "The team deserves an enormous amount of credit for coming up with that solution and implementing it as quickly as they were able to do."
 
Mike Moses, space shuttle launch integration manager, said it was a clean vehicle and clean flow. "We’re real proud of the work everyone has done."Mike Leinbach, space shuttle launch director, said, "We’re in outstanding shape." He also said Endeavour’s aft doors will be closed eight to nine days ahead of schedule and the teams are looking at a standard flow ahead. "There are no problems and we’re in great shape," said Leinbach.
 


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