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STS-51D: Flyswatter spacewalk
Discovery launched April 12, 1985 on the STS-51D mission. A U.S. military communications satellite, known as Leasat 3, failed to activate after its deployment from the payload bay. That set the stage for a spacewalk -- the shuttle program's first unplanned EVA -- to attach handcrafted "Flyswatter" objects on the shuttle robotic arm to hit a timing switch on the satellite. The rescue attempt did not succeed. Upon landing at Kennedy Space Center, Discovery blew a tire. The crew, including Senator Jake Garn of Utah, narrate this post-flight film of highlights from the week-long mission.

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Fuel tank update
NASA managers hold this news conference April 28 to give an update on plans for the next space shuttle mission, the ongoing external fuel tank testing and debates over further modifications.

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CALIPSO and CloudSat
The Boeing Delta 2 rocket carrying the CALIPSO and CloudSat atmospheric research spacecraft lifts off at 3:02 a.m. local time April 28 from Vandenberg Air Force Base, California.

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Tank meets SRBs
Inside the Vehicle Assembly Building, the external fuel tank for the STS-121 space shuttle mission is hoisted into position for attachment with the twin solid rocket boosters atop a mobile launch platform. The tank, ET-119, will carry the liquid oxygen and liquid hydrogen to feed Discovery's three main engines during launch.

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Discovery payload bay
In preparation for space shuttle Discovery's departure from its Orbiter Processing Facility hangar for rollover to the Vehicle Assembly Building and mating with the tank and boosters, the ship's 60-foot long payload bay doors are swung shut.

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Progress docking
Take a virtual ride aboard the Russian Progress 21P cargo freighter as it docks with the International Space Station. This movie captures the final approach and successful linkup from a camera on the Progress craft's nose.

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Eileen Collins completes career of space firsts
NASA NEWS RELEASE
Posted: May 1, 2006

Astronaut Eileen Collins is leaving NASA. Collins was the first woman to command a space shuttle and the leader of Discovery's Return to Flight mission last year. She plans to pursue private interests and spend more time with family.

"Eileen Collins is a living, breathing example of the best that our nation has to offer," said NASA Administrator Michael Griffin. "She is, of course, a brave, superb pilot and a magnificent crew commander. Beyond those qualities, she is both very bright and modestly self-effacing about that fact. And above all, she is possessed of a quiet determination to attain the very highest levels of accomplishment. I am proud to know her and will greatly miss her at NASA."

A veteran of four space flights, Collins' career at NASA has been punctuated by firsts. She was the first woman selected as a pilot astronaut, the first woman to serve as a shuttle pilot and the first woman to command a U.S. spacecraft.

"Eileen is a true pioneer in space and on Earth," said Mike Coats, director of NASA's Johnson Space Center, Houston. "Her service and dedication to her country, to NASA and to space exploration are an inspiration. She meets every challenge with confidence and an ever-present smile."

Collins was selected as an astronaut in 1990. She served as the pilot on mission STS-63 in February 1995, the first shuttle mission to rendezvous with the Russian Mir Space Station. In May 1997, she flew as pilot on mission STS-84, the sixth shuttle flight to dock to Mir. Collins commanded the Space Shuttle Columbia on mission STS-93 in July 1999, the flight that launched the Chandra X-Ray Observatory.

Her most recent space flight was as commander of July's STS-114 mission, the first shuttle flight since the Columbia accident in 2003. During the 14-day mission, Collins and her six-member crew tested new shuttle safety enhancements and resupplied the International Space Station.

"Eileen is a gifted leader who knows what it takes to get a team through the most difficult of times," said Flight Crew Operations Director Ken Bowersox. "All of us will feel Eileen's absence, but regardless of the path she pursues after leaving NASA, I know she will continue to exert a positive influence on the explorers of today and tomorrow."