Taking plants off-planet – how do they grow in zero gravity?

Gravity is a constant for all organisms on Earth. It acts on every aspect of our physiology, behavior and development – no matter what you are, you evolved in an environment where gravity roots us firmly to the ground.

Fifteen years of NASA's Chandra X-ray observatory

This Chandra X-ray Observatory image of the Hydra A galaxy cluster was taken on Oct. 30, 1999, with the Advanced CCD Imaging Spectrometer (ACIS) in an observation that lasted about six hours.

Special wake-up for Atlantis from shuttle workers

(AP) -- Usually space shuttle astronauts are awakened in orbit by a song sent by a loved one. But not much is routine for the final space shuttle flight, not even a wake-up call.

Israel flying to moon after SpaceX launch

An Israeli spacecraft rocketed toward the moon for the country's first attempted lunar landing, following a launch Thursday night by SpaceX.

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