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Astronauts Evacuate U.S. Side of Space Station After Gas Scare
An ammonia leak alarm forced the crew on the ISS to take refuge on the Russian side, but NASA says it was likely a faulty sensor.
160 heartbeats per minute: The final, frantic moments before the historic moon landing01:59
Celestial object may help unlock mysteries of the early universe01:03
Scientists discover twelve new moons orbiting Jupiter, one of them is an oddity01:38
NASA towers demolished at Cape Canaveral00:29
The geographical anomaly that makes Venus’ rotation so strange02:06
Realizing the dream of space: Astronaut Peggy Whitson on leaving Earth for the first time03:38