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One interesting story of the day.

Today NASA hopes to launch its $700 million Gravity B probe, which will attempt to determine whether concentrations of mass cause minute distortions in space-time, tugging slightly on the fabric of the cosmos. Space-time distortions caused by concentrations of mass are a prediction, so far unconfirmed, of the General Theory of Relativity.

Full story here:
http://www.nasa.gov/missions/highlights/launch_update_gpb.html

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