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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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Russian Soyuz rocket launches new spy satellite
BY STEPHEN CLARK
SPACEFLIGHT NOW

Posted: May 3, 2006

A clandestine military payload was placed into orbit by Russian military forces Wednesday in a launch from the nation's northern space base. The craft is likely a new spy satellite that will serve the Russian defense ministry.

The satellite was hauled into space by a Soyuz rocket from launch complex 16 at the Plesetsk Cosmodrome in far northern Russia at 1738 GMT (1:38 p.m. EDT). Defense officials said the spacecraft successfully separated from the rocket's third stage less than ten minutes after liftoff. The craft was released into an orbit with a high point of about 210 miles, a low point of 105 miles, and an inclination of around 67 degrees.

The payload is officially called Kosmos 2420 under the discreet Russian military nomenclature for satellites. Kosmos 2420 was the first military craft to be launched by Russia this year, and the first space launch of any kind from Plesetsk since December. It was also the 17th launch worldwide to successfully achieve orbit in 2006.

Kosmos 2420 could be a Yantar or Kobalt-class spy satellite to bolster Russia's declining military intelligence presence in space. If so, it will probably gather high resolution imagery of key international locations to be returned to Earth in re-entry capsules over the mission's lifetime.

The Russian news agency Itar-Tass reported earlier this week that defense ministry officials moved the launch forward from mid-May.