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spaceflight

A vista from NASA's Mars Exploration Rover Opportunity

That one-way ticket to Mars you were hoping for may not be such a good idea

Science

The Mars One mission was once a media darling, but a critical MIT report has triggered a backlash against the project that even includes one of its own potential astronauts.

A true-color image of Jupiter taken by the Cassini spacecraft. The Galilean moon Europa casts a shadow on the planet's cloud tops.

Exciting new ideas in space technology are getting short-changed by Congress

Technology
NASA Administrator Charles Bolden and his wife, Jackie, watch as the Delta IV Heavy rocket with the Orion spacecraft lifts off on December 5, 2014.

One small step from Earth, one giant leap to Mars?

Science
An artist's concept of NASA's MAVEN spacecraft approaching Mars. The probe entered Mars orbit on September 21.

A NASA spacecraft reaches Mars just in time to see an unexpected guest

Science
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