ScienceISS astronauts take a stroll in space to stow away broken ammonia pump Astronauts Reid Wiseman and Alexander Gerst, from NASA and ESA respectively, made their first spacewalk outside of the International Space Station on Tuesday to do maintenance work.by Rhodi Lee
ScienceRats are the new astronauts: NASA to send rats to space to test microgravity effectby Jim Algar
ScienceCygnus spacecraft packing 3500 lbs of trash onboard, will burn up Sunday during Earth re-entryby James Maynard
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