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President Obama Meets With Crew of Apollo 11

July 22, 2014

President Barack Obama meets with Apollo 11 astronauts Michael Collins, seated left, Buzz Aldrin, Carol Armstrong, widow of Apollo 11 ...

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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
Big Mystery in the Perseus Cluster

A mysterious X-ray signal from the Perseus cluster of galaxies, which researchers say cannot be explained by known physics, could be a key clue to the nature of Dark Matter.

Watch our latest ScienceCast: Big Mystery in the Perseus Cluster