Astronaut Chris Hadfield performs David Bowie's "Space Oddity" in microgravity. Commander Chris Hadfield is a great many things: a photographer, an educator, a social media maven -- did I forget to mention astronaut? And it's with great delight…

The sheer amount of debris in low-Earth orbit is tipping space dangerously close to a cascade of hazardous collisions, scientists announced at a four-day international meeting on the subject this week. And there is an "urgent need" to…

The parachute for the Mars Science Laboratory mission to Mars opened before launch. Photo by NASA/JPL-Caltech. A newly released series of images snapped by NASA's Mars Reconnaissance Orbiter reveals that the Curiosity rover's parachute has been flapping…

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