NASA's Curiosity Mars rover has found outcrops of conglomerate rocks made up of eroded gravels that scientists believe were transported across the floor of Gale Crater by a "vigorous" flow of water. Read More...

Trouble with a control panel aboard the Russian Zvezda command module prevented the planned undocking of an unmanned European cargo ship from the International Space Station Tuesday. Read More...

A two-million-second time exposure using cameras aboard the Hubble Space Telescope has captured images of proto galaxies as they appeared just 450 million years after the big bang. Read More...

Feeling the wind on its wings for the last time, the space shuttle Endeavour, bolted to the back of a NASA jumbo jet, closed out a three-day valedictory tour Friday, landing at Los Angeles International Airport. Read More...

The shuttle Endeavour, on its way to retirement in Los Angeles, flew from Houston to Edwards Air Force Base atop a 747 jumbo jet Thursday, dropping down for low passes over communities along the way.
Read More...

The Curiosity Mars rover, more than halfway to its first scientific destination, is pausing for a few days to carry out its first hands-on geology, focusing on a pyramid-shaped rock known as 'Jake.' Read More...

Bolted to the back of a 747 jumbo jet, the space shuttle Endeavour took off on its final voyage Wednesday, a "bittersweet" valedictory tour on the way to museum duty in Los Angeles. Read More...

The shuttle Endeavour was prepped for takeoff Wednesday on a cross-country tour atop a 747 transport jet, giving the public one last chance to see the orbiter in flight before transfer to a Los Angeles museum. Read More...

Two Russian cosmonauts and a NASA flight engineer undocked from the International Space Station and fell back to Earth Sunday, making a pinpoint landing in Kazakhstan to close out a 125-day voyage. Read More...

With his family looking on, Neil Armstrong, the first man on the moon, was buried at sea Friday. Read More...

Neil Armstrong, the unassuming test pilot, family man and reluctant hero who will forever walk in history as the first man on the moon, was honored at the Washington National Cathedral Thursday. Read More...

Engineers testing the Curiosity Mars rover are wrapping up a series of robot arm calibration and motion tests before resuming a slow trek toward a nearby rock formation this weekend. Read More...

NASA's Curiosity Mars rover, now about 270 feet from its landing site, is pausing for a week of robot arm tests and checkout before pressing on to Glenelg, an area where three types of rock come together.
Read More...

Spacewalkers Sunita Williams and Akihiko Hoshide successfully re-installed an electrical switching unit on the space station's solar array truss Wednesday, restoring lost power to the lab complex (UPDATED). Read More...

Astronauts Sunita Williams and Akihiko Hoshide will venture back outside the International Space Station Wednesday for another attempt to install a replacement power switching unit (updated timeline). Read More...