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Image of the Day
Supernova Seen In Two Lights

August 21, 2014

The destructive results of a mighty supernova explosion reveal themselves in a delicate blend of infrared and X-ray light, as ...

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Interactive Satellite Tracker
Interactive Satellite Tracker

Interactive Satellite Tracker (iSat) is a browser-based application that allows you to track all NASA Science Satellite Missions, as well as other satellites. Enjoy this free tool at home or in the classroom!

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Latest ScienceCast
Sizing up an Exoplanet YouTube Video

Astronomers are not only discovering planets around distant suns, they are also starting to measure those worlds with astonishing precision.

Watch our latest ScienceCast: Sizing up an Exoplanet