Gravity Probe B
Scientists are about to send a probe into orbit around Earth to prove -- or disprove -- Einstein's general theory of relativity. Join NPR's Ira Flatow for a look at the Gravity Probe B mission.
Guest:
John Turneaure
*Co-principal investigator, Gravity Probe B program
*Emeritus research professor of physics, W.W. Hansen Experimental Physics Labs, Stanford University

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