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Solar Impulse Prepares for Pacific Voyage
NBC News’ Ian Williams offers an up-close look at Solar Impulse’s hangar in China.
NBC News Science
As NASA launches historic mission to the sun, meet the man who inspired the project01:50
Stretch of Utah desert used as training ground for mission to Mars01:54
Discovery of an underground lake on Mars stokes hopes of finding life01:04
Can we figure out alien languages?04:45
San Diego Zoo hopes to end extinction using frozen cells02:14
The geographical anomaly that makes Venus’ rotation so strange02:06