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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