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Gravity Probe B

Testing Einstein's Universe

Scientist Spends Lifetime on Space Probe

ABC World News Tonight—Sunday, April 18, 2004. Story by Ned Potter and Clayton Sandell, with ABC News Anchor Elizabeth Vargas.

© 2004, ABC News. Video courtesy of ABC News. This video may not be copied or re-distributed.

Flash video; Duration 3 Minutes, 19 Seconds