Astronaut helmet camera captures video of NASA engineers Chris Cassidy and Tom Marshburn replacing a pump on International Space Station suspected of leaking ammonia.May 11, 2013
UP NEXT
Relativity Space launches world’s first 3D-printed rocket, fails to reach orbit
01:41
First Native American woman to fly in space returns to Earth
00:22
Mysterious flying objects could be sign of extraterrestrials, draft Harvard report says
01:39
Japan's new rocket fails on first mission when second-stage engine malfunctions
01:05
New study says Hubble Space Telescope faces threat from private companies' satellites
02:43
SpaceX launches crew to International Space Station