Life in Our Universe
Space Travel—A Reality Check
S1 • E21 May 21, 2012 33m
Space is so vast that inventing a method of faster-than-light travel is the only way humans could conceivably travel the cosmos conveniently. How hard is space travel, really? In this mind-bending lecture, review the obstacles to space travel and consider their theoretical solutions—from combining matter and antimatter into energy, to taking "short cuts" via warp drive and wormholes.