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Image of the Day
Fall Colors Arriving

September 30, 2014

A few days after autumn showed up on the calendar in the Northern Hemisphere, it showed up on the landscape ...

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Balance Mass Challenge
Mars Balance Mass Challenge

The Mars Balance Mass Challenge seeks design ideas for small science and technology payloads that could potentially provide dual purpose as ejectable balance masses on spacecraft entering the Martian atmosphere.

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Latest ScienceCast
A Giant Among Earth Satellites YouTube Video

The weekend launch of ISS-RapidScat onboard SpaceX-4 has kickstarted a new era for the International Space Station as a giant Earth-observing satellite.

Watch our latest ScienceCast: A Giant Among Earth Satellites