Space station commander Oleg Kotov took over manual control of an approaching Progress supply ship Friday after an undisclosed problem and deftly guided the craft in for a smooth docking at the International Space Station's aft port. Read More...

After a multi-million-year plunge from the frozen fringes of the solar system, Comet ISON may have broken apart and evaporated in the fierce heat and crushing gravity of the sun before or during a close flyby Thursday, scientist say. Or maybe not. (UPDATED) Read More...

Launch of a SpaceX Falcon 9 rocket carrying the company's first commercial communications satellite payload is on hold pending a data review and engine inspections after two launch tries Thursday, including a dramatic engine start and shut down. Read More...

Astronomers around the world are closely monitoring Comet ISON's plunge through the inner solar system and awaiting data from a fleet of space telescopes to find out whether the enigmatic chunk of ice will survive a blistering Thanksgiving Day flyby of the sun.
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Launch of an upgraded SpaceX Falcon 9 rocket carrying a commercial communications satellite was delayed Monday by unexplained technical snags late in the countdown. Launch was retargeted for Thursday. Read More...

SpaceX, the upstart rocket company owned by tech maverick Elon Musk, faces what might be its biggest challenge Monday with the launch of a costly commercial communications satellite aboard an upgraded Falcon 9 rocket. Read More...

President John F. Kennedy's decision to commit the United States to landing a man on the moon within a single decade, with only rudimentary ideas about how to do it and almost no space experience, was by today's standards an unimaginably daring gamble. Read More...

In May 1961, John F. Kennedy, a charismatic young president with bold dreams for a re-energized America, stood in the eye of a perfect geopolitical storm when he decided to set the nation on course to the moon. Read More...

Science observations by the Curiosity Mars rover are on hold pending tests to pin down the cause of an unexpected voltage change that was detected last Sunday, NASA said in a status report Wednesday. Read More...

Fifteen years ago, a Russian Proton rocket carrying the first module of what would become the International Space Station roared to life and climbed into orbit, kicking off one of the most complex -- and expensive -- engineering projects ever attempted. Read More...

A new NASA Mars probe began a 10-month voyage to the red planet Monday, blasting off on a $671 million mission to study the martian atmosphere and the cause of a dramatic case of climate change.
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NASA's next Mars probe is poised for launch Monday, weather permitting, to kick off a $671 million mission to find out why a good portion of the red planet's atmosphere leaked away ages ago in an extreme case of climate change.
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A spectacular panorama of the ringed planet Saturn, captured by NASA's Cassini spacecraft as it flew through the planet's shadow July 19, was unveiled Tuesday, showing Earth and its two sister planets, Mars and Venus as star-like points of light. Read More...

Three station fliers strapped into their Soyuz TMA-09M ferry craft and plunged back to Earth Sunday, settling to a jarring rocket-assisted landing on the frigid steppe of Kazakhstan to close out a 166-day stay in space. Read More...

Realtime coverage of Russian spacewalk No. 36. Read More...

Two Russian cosmonauts plan to carry an unlighted Olympic torch outside the International Space Station Saturday, staging a symbolic spacewalk relay as part of the build up to the 2014 Winter Games. Read More...

A Soyuz rocket carrying a crew of three and an Olympic torch heralding the 2014 Winter Games in Sochi, Russia, streaked into orbit Wednesday and docked with the International Space Station early Thursday. Read More...

Data collected by NASA's Kepler space telescope indicates one in five sun-like stars likely hosts an Earth-size planet in the habitable zone where life as it is known on Earth can, in theory, exist, scientists say. Read More...