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Chris Cassidy

NASA Solves UFO Mystery

The Huffington Post | Posted 08.22.2013 | Science

Has an astronaut finally spotted an alien spaceship? NASA astronaut Chris Cassidy spotted something strange -- an unidentified flying object -- flo...

WATCH: Astronauts Take Emergency Spacewalk To Fix Leak

AP | MARCIA DUNN | Posted 07.11.2013 | Science

CAPE CANAVERAL, Fla. — Astronauts making a rare, hastily planned spacewalk replaced a pump outside the International Space Station on Saturday i...