30 Years Since Challenger: New Voice At Astronauts' MemorialAs families of the lost Challenger astronauts gather with NASA to mark the space shuttle accident's 30th anniversary, there's a new voice to address the crowd.
NASA Marks 10 Years Since Columbia TragedyNASA will honor the seven astronauts who perished when the Columbia space shuttle was destroyed 10 years ago. The agency will mark the anniversary at a public memorial in Florida.
Space Shuttle Discovery Makes Final TakeoffAfter three decades of space service, NASA's oldest shuttle, Discovery, began its new life as a museum relic on Tuesday with one final takeoff.

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