
Friday, 27 March 2009
New Crew for ISS

Tuesday, 18 November 2008
Hubble Photographs Another World

J.D. Harrington NASA Headquarters
Saturday, 19 July 2008
I'll Be Back, Schwarzenegger, NASA

Friday, 18 July 2008
NASA Spacecraft Shows Diverse, Wet Environments on Ancient Mars

A color-enhanced image of the delta in Jezero Crater, which once held a lake. Researchers report that ancient rivers ferried clay-like minerals (shown in green) into the lake, forming the delta. Clays tend to trap and preserve organic matter, making the delta a good place to look for signs of ancient life. Image credit: NASA/JPL/JHUAPL/MSSS/Brown University

This three-dimensional image of a trough shows a type of minerals called phyllosilicates (in magenta and blue hues) concentrated on the slopes of mesas and along canyon walls. The abundance of phyllosilicates shows that water played a sizable role in changing the minerals of a variety of terrains in the planet's early history.Image credit: NASA/JPL/JHUAPL/University of Arizona/Brown University
Thursday, 10 July 2008
25 Years of Connecting Space to Earth
Twenty-five years ago, NASA inaugurated a new era in spacecraft communications with the launch of the first Tracking and Data Relay Satellite, or TDRS. This space-based system ultimately replaced an extensive network of ground tracking stations deployed for the Apollo missions and significantly increased the time available to mission operators to contact their flight vehicles.
Perched 22,300 miles above the equator, the satellite rotated Earth at the same speed and direction that the Earth turns. Relative to a point on Earth, TDRS appeared to remain stationary. From that geosynchronous orbit, it beamed communications from Earth to other orbiting spacecraft and back, establishing itself as a reliable resource for NASA's space shuttle and other customers.TDRS-1 provided a link for the first wireless phone call between the North Pole and the South Pole, and the first live webcast from the North Pole. It also was the first satellite to connect to the Internet.

The Tracking and Data Relay Satellite System transmits voice, television, and data between spacecraft and control centers on Earth. Credit: NASA.
Soon, more TDRS satellites joined the Tracking and Data Relay Satellite System, forming a constellation of nine NASA satellites that today provides nearly continuous tracking and high-bandwidth communications with scores of Earth orbiting spacecraft, launch vehicles, long duration balloons, and a research station in Antarctica."When many people look at the TV and see beautiful pictures coming from the shuttle or space station, they take communications for granted," said Badri Younes, NASA deputy associate administrator for Space Communications and Navigation. "They don’t know the capabilities that NASA leverages in getting this data down to the ground."
Over the last 25 years, the TDRSS network has brought stunning images from the Hubble Space Telescope to Earth. It has delivered pictures, television, voice and data from more than 100 space shuttle missions and the International Space Station. The TDRSS network has delivered large volumes of Earth observation data in support of Mission to Planet Earth and investigations into global climate change.
Other TDRSS users have included the Automated Transfer Vehicle, Solar Mesosphere Explorer, Solar Maximum Mission, Compton Gamma Ray Observatory, Terra, Landsat, SWIFT, Earth Radiation Budget Satellite, Cosmic Background Explorer, Extreme Ultraviolet Explorer, Aqua, and Aura.

In April 1983, the first Tracking and Data Relay Satellite, TDRS-1, was launched from space shuttle Challenger's payload bay on mission STS-6. Credit: NASA.
The TDRS system has evolved over the last 25 years to meet expanding user requirements and provide new services. Meanwhile, the very first TDRS satellite that was deployed by space shuttle Challenger in April 1983 is still on duty today, returning data from the National Science Foundation activities at the Amundsen-Scott South Pole Station in Antarctica.
Bye for now,
Nick
SPACEBOOSTERS Online Store
Wednesday, 9 July 2008
Hometown Hero

Anderson’s appearance in Kansas City, Mo., on May 15 was the kickoff of NASA’s Hometown Heroes 2008 Campaign. Throughout the summer, former International Space Station astronauts will journey back to their home states or regions to throw out the first pitch at Major League Baseball (MLB) games across the United States.
NASA astronaut Clay Anderson being interviewed on KMBC-TV 9 in Kansas City, Mo. Photo credit: NASA
He then headed across town to KMBC-TV 9 to appear on that station’s morning newscast. “You know, a lot of us are a little bit star struck, because I don’t believe we’ve met an astronaut before,” said KMBC news anchor Dion Lim.

NASA astronaut Clay Anderson signing autographs for students. 22,000 students, teachers and parents attended WDAF’s School “Day at the K” weather program at Kauffman Stadium prior to the game. Photo credit: NASA
Victor Scott c/o Johnson Space Center, Houston
Thursday, 3 July 2008
Crews Get a Breather For The Fourth
Technicians have completed installation of space shuttle main engine dome heat shields as well as inspections to the reinforced carbon-carbon panels. In bay 2 of Kennedy's Orbiter Processing Facility, shuttle Endeavour is being prepared for flight. Endeavour will stand ready on Launch Pad 39B to be used for a rescue mission in the unlikely event Atlantis has an emergency in space. The orbiter will then move to pad 39A for the STS-126 mission after Atlantis has returned.
This is the 17th time in NASA history that two spacecraft are being readied for launch at the same time. Meanwhile at Launch Pad 39A, workers installed anchors and plates to both the east and west walls which support the bricks above the lintel, prior to brick removal and replacement.
During Discovery's launch on May 31, damage occurred on a 100’ X 20’ section of the east wall of the north flame trench. Broken sections of the flame trench wall were scattered from the trench to the pad perimeter fence. The pad is expected to be repaired by Atlantis' STS-125 targeted launch date on Oct. 8. At NASA's Johnson Space Flight Center in Houston, STS-125 astronauts wrapped up a week of training and will have a holiday weekend off with family and friends.
Nick
SPACEBOOSTERS Online Store
Wednesday, 25 June 2008
06.25.08
"Three...two…one…release!" shouts Scott Runnells, a NASA lead technician, prompting a 16,000 pound (7,257 kg) test apparatus to swing down to Earth from nearly 40 feet in the air.
Second generation airbag drop testing is underway at the 240-foot-tall (73 m) Landing and Impact Research Facility, also known as "the gantry," at NASA's Langley Research Center in Hampton, Va.
Engineers and technicians examine the impact on airbags after these pendulum swing drop tests to help further research on a contingency land landing system for Orion, NASA's new crew exploration vehicle.
Now under development, Orion will be America's next crewed spacecraft, designed to fly to the International Space Station and be part of the space flight system to conduct sustained human exploration of the moon. While it is early in the design process and plans could change, NASA currently is working toward a splashdown landing for Orion.
The agency also is preparing for scenarios that could reroute the spacecraft during its return to Earth. In the event that a pad abort occurs -- and the crew module is rapidly propelled away from the Ares I rocket while still on the launch pad -- wind could catch Orion's parachutes in its descent and blow it back toward the shore.
"Although an unlikely scenario, the possibility of wind blowing Orion back to land from its intended water target during a pad abort can't be dismissed," Barry Bryant, project manager for the Orion Landing System Advanced Development Project, said.
For this reason, NASA is developing the contingency land landing system, which consists of two airbag assemblies called "leading edge airbags" that will wrap around the front edge of the Orion crew module.
"After a pad abort, you're really not sure if you're going to hit water or land, so if you have different landing architectures -- for example one hang angle for water and a different hang angle for land -- you don't know how to throw the switch on a pad abort because you can't be certain as to which [kind of] landing you're going to have," Bryant said.
This scenario led to NASA's goal of developing a singular landing system that will work for both land and water landings. Since Orion's intended landing site is water, the spacecraft will descend at an angle in its return to Earth. With the design of the airbags, the contingency land landing system will support a touchdown on land even though Orion is coming down at an angle.
"If we have a contingency land landing system that has a low risk of injury, now whether you land on water or land, you've got the same low risk for the crew," Bryant said.
"Now the people that make the decision about how to reenter in the case of an emergency situation don't have to add the choice between land or water to their complex, critical thinking because they've got a vehicle that can land in either spot," he said.
Although in the beginning stages, preparations for the development of a contingency land landing system are progressing quickly.
While the airbag drop tests were originally planned to provide research for a nominal land landing, NASA engineers are using the demonstrations to prove out the design and the fabrication techniques that will be used on contingency land landing airbags.
After second generation testing wraps up this summer, tests specifically for the contingency land landing system will begin.
Airbag vendors Airborne Systems and ILC Dover are working together to build a full-scale prototype of the contingency land landing airbag assembly and to demonstrate an in-house deployment.
Following further designs of the airbag assembly, NASA will test a contingency land landing airbag at the 72-foot (22 m) Vertical Drop Tower and the 20-foot (6 m) Vertical Spin Tunnel at Langley. Engineers will subsequently conduct full-scale drop tests similar to demonstrations being performed today -- only this time they will use the newly-designed leading edge airbags.
Emily Outen
NASA Langley Research Center
Bye for now,
Nick
SPACEBOOSTERS Online Store
Monday, 23 June 2008
Space Shuttle Overview: Challenger
First called STA-099, Challenger was built to serve as a test vehicle for the Space Shuttle program. But despite its Earth-bound beginnings, STA-099 was destined for space.
In the late 1970s, NASA strived for a lighter weight orbiter, but a test vehicle was needed to ensure the lighter airframe could handle the stress of space flight. Computer software at the time wasn't yet advanced enough to accurately predict how STA-099's new, optimized design would respond to intense heat and stress. The best solution was to submit the vehicle to a year of intensive vibration and thermal testing.

Challenger is seen against a breathtaking backdrop of blue water and white clouds in this photo, taken from a camera aboard the Shuttle Pallet Satellite during mission STS-7. Credit: NASA
In early 1979, NASA awarded Space Shuttle orbiter manufacturer Rockwell a contract to convert STA-099 to a space-rated orbiter, OV-099. The vehicle's conversion began late that year. Although the job was easier than it would have been to convert NASA's first orbiter, Enterprise, it was a major process that involved the disassembly and replacement of many parts and components.
The second orbiter to join NASA's Space Shuttle fleet, OV-099 arrived at NASA's Kennedy Space Center in Florida in July 1982, bearing the name "Challenger."
Space Shuttle orbiter Challenger was named after the British Naval research vessel HMS Challenger that sailed the Atlantic and Pacific oceans during the 1870s. The Apollo 17 lunar module also carried the name of Challenger. Like its historic predecessors, Challenger and her crews made significant scientific contributions in the spirit of exploration.
Challenger launched on her maiden voyage, STS-6, on April 4, 1983. That mission saw the first spacewalk of the Space Shuttle program, as well as the deployment of the first satellite in the Tracking and Data Relay System constellation. The orbiter launched the first American woman, Sally Ride, into space on mission STS-7 and was the first to carry two U.S. female astronauts on mission STS 41-G.

Image to right: Space Shuttle Challenger leaps from the launch pad to begin mission STS-41-C. Credit: NASA
The first orbiter to launch and land at night on mission STS-8, Challenger also made the first Space Shuttle landing at Kennedy Space Center, concluding mission STS 41-B. Spacelabs 2 and 3 flew aboard the ship on missions STS 51-F and STS 51-B, as did the first German-dedicated Spacelab on STS 61-A. A host of scientific experiments and satellite deployments were performed during Challenger's missions.
Challenger's service to America's Space Program ended in tragedy on Jan. 28, 1986. Just 73 seconds into mission STS 51-L, a booster failure caused an explosion that resulted in the loss of seven astronauts, as well as the vehicle.
The loss of Challenger does not overshadow her legacy in NASA's storied history. The discoveries made on her many successful missions continue to better mankind in space flight and in life on Earth.
Construction Milestones - STA-099
July 26, 1972
Contract Award
Nov. 21, 1975
Start structural assembly of crew module
June 14, 1976
Start structural assembly of aft-fuselage
March 16, 1977
Wings arrive at Palmdale from Grumman
Sept. 30, 1977
Start of Final Assembly
Feb. 10, 1978
Completed final assembly
Feb. 14, 1978
Rollout from PalmdaleConstruction Milestones - OV-099
Jan. 1, 1979
Contract Award
Jan. 28, 1979
Start structural assembly of crew module
June 14, 1976
Start structural assembly of aft-fuselage
March 16, 1977
Wings arrive at Palmdale from Grumman
Nov. 3, 1980
Start of Final Assembly
Oct. 21, 1981
Completed final assembly
June 30, 1982
Rollout from Palmdale
July 1, 1982
Overland transport from Palmdale to Edwards
July 5, 1982
Delivery to Kennedy Space Center
Dec. 19, 1982
Flight Readiness Firing
April 4, 1983
First Flight (STS-6)
Nick.
SPACEBOOSTERS Online Store
NASA Space Shuttle Atlantis
NASA's fourth space-rated space shuttle, OV-104 "Atlantis," was named after the two-masted boat that served as the primary research vessel for the Woods Hole Oceanographic Institute in Massachusetts from 1930 to 1966. The boat had a 17-member crew and accommodated up to five scientists who worked in two onboard laboratories, examining water samples and marine life. The crew also used the first electronic sounding devices to map the ocean floor.


Left:Riding twin plumes of flame produced by its Solid Rocket Boosters, Space Shuttle Atlantis clears the tower as it launches on mission STS-46. Credit: NASA
Construction Milestones - OV-104
Jan. 29, 1979 Contract Award
March 30, 1980 Start structural assembly of crew module
Nov. 23, 1981 Start structural assembly of aft-fuselage
June 13, 1983 Wings arrive at Palmdale from Grumman
Dec. 2, 1983 Start of Final Assembly
April 10, 1984 Completed final assembly
March 6, 1985 Rollout from PalmdaleApril 3, 1985 Overland transport from Palmdale to Edwards
April 9, 1985 Delivery to Kennedy Space Center
Sept. 5, 1985 Flight Readiness Firing
Oct. 3, 1985 First Flight (STS-51-J)Upgrades and FeaturesBy early 2005, Atlantis had undergone two overhauls known as Orbiter Maintenance Down Periods.
Some of the most significant upgrades and new features included:
- Installation of the drag chute
- New plumbing lines and electrical connections configuring the orbiter for extended duration missions
- New insulation for the main landing gear doors
- Improved nosewheel steering
- Preparations for the Mir Orbiter Docking System unit later installed at Kennedy
- Installation of the International Space Station airlock and Orbiter Docking System
- Installation of the Multifunction Electronic Display System, or "glass cockpit"
Nick
SPACEBOOSTERS Online StoreNASA-SPACE
STS-125: The Final Visit
It's a mission to once more push the boundaries of how deep in space and far back in time humanity can see. It's a flight to again upgrade what already may be the most significant satellite ever launched.
And, for the space shuttle, it's a final visit to a dear, old friend.
The STS-125 mission will return the space shuttle to the Hubble Space Telescope for one last visit before the shuttle fleet retires in 2010. Over 12 days and five spacewalks, the shuttle Atlantis’ crew will make repairs and upgrades to the telescope, leaving it better than ever and ready for another five years – or more – of research.
The shuttle Discovery launched Hubble in 1990, and released it into an orbit 350 miles above the Earth. Since then it’s circled Earth more than 97,000 times and provided more than 4,000 astronomers access to the stars not possible from inside Earth’s atmosphere. Hubble has helped answer some of science’s key questions and provided images that have awed and inspired the world.

The Hubble Space Telescope is in the grip of space shuttle Columbia's robotic arm in March 2002 at the beginning of STS-109, the third Hubble servicing mission. Image: NASA
“We’ve actually seen an object that emitted its light about 13 billion years ago,” said Hubble senior scientist Dave Leckrone. “Since the universe is 13.7 billion years old, that’s its infancy, the nursery. From the nearest parts of our solar system to further back in time than anyone has ever looked before, we’ve taken ordinary citizens on a voyage through the universe.”
But Hubble has not done it alone.
Atlantis’ crew – Commander Scott Altman, Pilot Gregory C. Johnson and Mission Specialists Andrew Feustel, Michael Good, John Grunsfeld, Mike Massimino and Megan McArthur – will be the fifth shuttle crew to fly to the telescope. Their predecessors have replaced and repaired failed and faulty components and added new and improved cameras and scientific equipment, and the STS-125 crew will be no different.
Most exciting are the new scientific instruments Atlantis’ spacewalkers will install. The Cosmic Origins Spectrograph, for instance, will observe the light put out by extremely faint, far-away quasars and see how that light changes as it passes through the intervening gas between distant galaxies. In this way scientists will learn what that gas is made of, how it’s changed over time and how it affects the galaxies around it.
“It’s an important player in the story of how galaxies are formed and how the chemical makeup of the universe has changed over time,” Leckrone said.
And the new Wide Field Camera 3 will allow Hubble to take large-scale, extremely clear and detailed pictures over a very wide range of colors. At ultraviolet and infrared wavelengths the WFC3 represents a dramatic improvement in capability over all previous Hubble cameras. It is also a very capable visible light camera, though by design not quite as capable at visible wavelengths as Hubble’s Advanced Camera for Surveys. The WFC3 and ACS are designed to work together in a complementary fashion.
“If I want a complete family album of the universe, I need to look at it in all these different wavelengths,” Leckrone said. “This will be the first time we’ve had an opportunity to take all these different images together, to have a comparable quality of pictures across this whole wavelength band.”
Before those much anticipated views are seen, though, the equipment has to be installed – a process that will be exciting in its own right. The spacewalks necessary to outfit Hubble will be very different from the spacewalks conducted at the International Space Station.
“It’s more like brain surgery than construction,” Lead Flight Director Tony Ceccacci said. “On station spacewalks, you’re installing large pieces of equipment – trusses, modules, etc. – and putting it together like an erector set. You can’t do that with Hubble. Hubble spacewalks are comparable to standing at an operating table, doing very dexterous work.”
Although the installation of the new equipment and the replacement of some old items – gyroscopes, batteries and a fine guidance sensor – will be challenging, it’s the repairs the astronauts plan that will be the most complicated.
The new camera and spectrograph are designed to complement the scientific instruments already on the telescope – specifically the Advanced Camera for Surveys and the Space Telescope Imaging Spectrograph. But pieces of those instruments have failed in past years – not the entire instrument, but specific pieces inside of them.
The crew will replace only the pieces that have failed. But those instruments were never designed to be repaired in space. In fact, they were specifically designed not to come apart.
“When we first looked at it, we were going ‘well, maybe, maybe not,’” Ceccacci said.
Since then, the team has come up with a plan for the work that Ceccacci believes will be very successful. But it won’t be easy – the repair of the spectrograph, for instance, requires the spacewalkers to remove more than 100 screws to access a computer card they will pull out and replace.
Still, the mission’s commander pointed out that it’s good practice for the future. “I think it’s a step that we need to take to make us better able to go to places like Mars,” Altman said. “You don’t want to drag a whole spare giant box along – you’d like to be able to have the one little transistor you need to plug in when that fails. Being able to demonstrate this in space is a key element of us growing as a space-faring people.”
The Hubble spacewalks won’t be the only things that differ from missions to the space station. Confined to just the shuttle, the quarters will be tighter; with five back-to-back spacewalks, the pace will be faster.
Without the station crew to give the shuttle a once over and photograph its heat shield , the customary survey of the heat shield done the day after launch will be much more intensive. The crew will use the shuttle robotic arm and its 50-foot boom extension and sensor systems to perform not only the standard nose cap and wing leading edges inspection, but also a survey of the upper crew cabin and the entire underside.
In the unlikely event that irreparable damage is found, the crew also won’t be able to get to the space station to wait for a ride home – Atlantis can't reach the station from Hubble’s orbit. Because the crew won't have access to the station and the support it could provide in an emergency, the mission to Hubble requires some changes on the ground.
For every shuttle mission since Columbia, there has been a contingency plan in place to allow another shuttle to be launched if needed to rescue a stranded shuttle crew. On station missions, that stranded crew can wait longer at the station than would be the case for Atlantis. So, for 125, another shuttle will be standing ready on Kennedy Space Center’s Launch Pad 39-B. If needed, space shuttle Endeavour, manned by the flight deck crew of mission STS-123 which flew in March, will be ready to fly to Hubble and retrieve Atlantis’ crew within days.
What puts Altman’s mind at ease, however, are the changes NASA has made to keep damage from occurring in the first place.
“I feel pretty good that we’ve made incredible improvement in the external tank,” he said. “That’s the root cause. But if something does happen, I think we have the tools to find it, see where it is, evaluate how serious it is and fix it. And then on that one-way-down-at-the-edge-of-the-probability-level chance that you could have damage such that you wouldn’t want to come home on it, we have the capability to stay up there – extend our time and have another shuttle come get us.”
The risks, he believes, are relatively small, and the payoff is huge.
“Hubble puts cutting edge science together with a visual image that grabs the public’s imagination,” Altman said. “I think that’s the first step in exploration. Because Hubble takes light that’s been traveling for billions of years, sucks it in and shows it to us. It’s like taking you on a journey 13 and a half billion light years away while you sit there at home and look out at the universe.”
Nick
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Sunday, 22 June 2008
Astronaut Barbara Morgan Plans to Leave NASA, Return to Public Education

