CAPE CANAVERAL - A pair of astronauts ventured out on a spacewalk Thursday to help install the last set of solar wings at the international space station. ...more

March 19, 2009

NASA has begun preparations for a Feb. 12 launch of U.S. space shuttle Discovery to the International Space Station, spending this weekend joining the external fuel tank and solid-rocket boosters to the shuttle. ...more

January 11, 2009

A tool bag that floated away from a spacewalking astronaut this week was one of the largest items ever lost in space, and NASA guessed it cost about $100,000. ...more

November 20, 2008

The Phoenix lander's first taste test of soil near Mars' north pole reveals a briny environment similar to what can be found in backyards on Earth, scientists said Thursday. ...more

June 27, 2008

Scientists with the Phoenix Mars Mission declared Friday for certain there is ice on Mars, putting them an essential step closer to answering the question that has driven three decades of Mars exploration and centuries of Earthbound speculation: Could there have been life there? ...more

June 21, 2008

HOUSTON - Two astronauts floated outside the international space station Sunday and finished two of the maintenance tasks on their work list during the final spacewalk of the space shuttle Discovery's visit to the orbiting outpost. ...more

June 8, 2008

After nearly two weeks of testing and preparation, NASA's Phoenix lander on Friday began its first day of science operations at Mars' north pole. ...more

June 7, 2008

NASA's Phoenix lander got extra playtime in the Martian dirt on Tuesday, doing another practice dig as scientists tried to perfect the technique ahead of the actual excavation. ...more

June 4, 2008

Scientists for the Phoenix Mars Lander are wrestling with an intermittent short circuit on the craft. ...more

May 31, 2008

Ground operations began Monday at the Phoenix landing site at Mars' north pole, with the latest images from the robotic lander showing a bizarre, checkerboard-type landscape apparently carved by the movement of ice lying only inches beneath the surface. ...more

May 27, 2008