Two weeks after slipping into orbit around Mercury, NASA's MESSENGER spacecraft is beaming back a steady stream of intriguing pictures. A year-long campaign to map the planet is scheduled to begin Monday. Read More...

Kelly says his injured wife continues to make progress and that there's a 'pretty good chance' she will be able to attend his launch aboard the shuttle Endeavour next month. Read More...

Shuttle commander Mark Kelly abruptly pulled himself from planned pre-flight media interviews, citing a reluctance to field personal questions about his wife, Gabrielle Giffords. Read More...

After a six-and-a-half-year journey, NASA's compact MESSENGER probe braked into a looping orbit around hellish Mercury Thursday, becoming the first spacecraft to take up long-term residence around the innermost planet.
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Outgoing space station commander Scott Kelly, Soyuz TMA-01M commander Alexander Kaleri and flight engineer Oleg Skripochka undocked and returned to Earth early Wednesday, closing out a 159-day mission. Read More...

A United Space Alliance worker was killed early Monday after a fall at launch complex 39A where the shuttle Endeavour is being readied for flight April 19. All work at the pad was suspended for the day. Read More...

A United Launch Alliance medium-class Delta 4 rocket boosted a secret National Reconnaissance Office satellite into space Friday, capping a busy week on Florida's Space Coast. Read More...

The shuttle Endeavour was mounted atop launch pad 39A Friday, setting the stage for launch April 19 on a four-spacewalk mission to resupply the International Space Station and deliver a $2 billion physics experiment.
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The shuttle Discovery glided to a smooth touchdown Wednesday to wrap up the orbiter's 39th and final mission, a milestone marking the beginning of the end for NASA's winged rocketships. Read More...

With windy but acceptable weather expected, the shuttle Discovery's crew is preparing the ship for its 39th and final re-entry, setting up for a Kennedy Space Center landing to close out a successful space station assembly mission. Read More...

With a favorable forecast and no technical problems, NASA is gearing up to bring the shuttle Discovery back to Earth Wednesday to close out the veteran spaceplane's 39th and final flight. Read More...

The shuttle Discovery's crew, packing up for the ship's final re-entry and landing Wednesday, said Americans should be proud of the shuttle program, but expressed concern about the lack of a near-term replacement. Read More...

The shuttle Discovery's crew enjoyed a live wakeup call from Big Head Todd and the Monsters in mission control Tuesday before testing the ship's re-entry systems and packing up for landing Wednesday. Read More...

The shuttle Discovery's crew, after a "Star Trek" wakeup call from William Shatner, undocked from the International Space Station early Monday, wrapping up an extended assembly and resupply mission. Read More...

The Discovery astronauts completed final equipment transfers to and from the International Space Station Sunday and returned to the shuttle to rig the ship for departure early Monday to wrap up a busy resupply mission. Read More...

The Discovery astronauts and their space station counterparts, nearly finished unloading a newly attached storage module, carried out needed maintenance on the station's life support systems Saturday. Read More...

A United Launch Alliance Atlas 5 rocket blasted off and boosted an unmanned Air Force spaceplane toward orbit Saturday to kick off a classified military mission. It was the second flight of an X-37B spacecraft. Read More...

The Discovery astronauts are putting in another day of work to unload the newly attached Permanent Multipurpose Module while mission planners revise the crew's timeline to reflect a second additional day docked to the lab complex. Read More...

NASA's Glory environmental research satellite crashed into the southern Pacific Ocean Friday in a $424 million launch failure, the second in a row for the Orbital Sciences Taurus XL booster. Read More...

President Barack Obama congratulated the shuttle Discovery's crew Thursday, praising the orbiter for a "critical and iconic" final flight to the International Space Station. NASA, meanwhile, extended the shuttle's flight a second day. Read More...

Astronauts Alvin Drew and Stephen Bowen carried out a six-hour 14-minute spacewalk Wednesday to perform a variety of maintenance chores outside the International Space Station (realtime coverage). Read More...

Astronauts Alvin Drew and Stephen Bowen plan to carry out a variety of maintenance chores outside the International Space Station during a planned 6.5-hour spacewalk. Read More...

Russian mission managers rejected a NASA proposal for a Soyuz fly-around of the International Space Station to capture unprecedented views of the lab complex with the shuttle Discovery and a variety of other vehicles attached. Read More...

The Discovery astronauts attached a final U.S. module to the International Space Station Tusday, providing lab crews with needed storage space. Read More...