11 November 2010, 11:25 AM ET
A misaligned seal on the space shuttle Discovery's external fuel tank may be to blame for the potentially dangerous leak of hydrogen gas that thwarted NASA's attempt to launch the spacecraft last week.
11 November 2010, 10:42 AM ET
Rocket and spaceship builder SpaceX has raised another $50 million from investors to support its commercial space vehicle projects.
09 November 2010, 05:49 PM ET
The California-based company SpaceX is developing new Falcon 9 rockets and Dragon spacecraft to send cargo and possibly people into orbit.
05 November 2010, 04:33 PM ET
Renowned aerospace designer and leading architect of private space travel, Burt Rutan, has announced his retirement plans.
04 November 2010, 02:05 PM ET
Astronomers have discovered a hidden cache of ancient galaxies using space-time distortions known as 'gravitational lenses.'
29 October 2010, 04:01 PM ET
Virgin Galactic's private SpaceShipTwo suborbital spacecraft has completed its second glide test at the Mojave Air and Space Port in California.
28 October 2010, 05:18 PM ET
A space race is on among commercial companies aiming to snag a lucrative contract to ferry astronauts to the International Space Station.
28 October 2010, 10:36 AM ET
Virgin Galactic is already making inroads into suborbital space with its SpaceShipTwo vehicle - but it plans to move on to orbital flights soon.
28 October 2010, 10:25 AM ET
The twin Swedish satellites Mango and Tango recorded a video of their close approaches on October and September 2010 during a successful test of their autonomous rendezvous technology.
25 October 2010, 06:31 PM ET
Our solar system's planets vary greatly in size, composition, temperature, chemistry and geology. Here are some notable extreme facts about the planets that orbit our Sun.
25 October 2010, 04:21 PM ET
The first launch of SpaceX's new Dragon space capsule has been delayed by 10 days to Nov. 18.
25 October 2010, 10:56 AM ET
The mothership WhiteKnightTwo carries Virgin Galactic's suborbital spacecraft SpaceShipTwo to New Mexico's Spaceport America, which will be its home base once the facility is complete.
25 October 2010, 07:41 AM ET
Astronomers plan to hold a conference call with reporters Oct. 26 to discuss new discoveries about stars made using data from NASA's Kepler space telescope.
22 October 2010, 07:01 PM ET
A new private spaceship designed to carry tourists to space touched down for the first time Friday (Oct. 22) on the runway of Spaceport America, soon to become its home base.
21 October 2010, 12:18 PM ET
Failure is not an option — it comes standard in rocket science.
19 October 2010, 07:32 PM ET
The age of private spaceflight is almost upon us with a veritable fleet of new commercial spaceships rolling out to the launch pad. As NASA iconic space shuttles retire for good, here's a look at new private ships soon to be reality
19 October 2010, 04:59 PM ET
A comet-chasing NASA spacecraft is closing in on its icy quarry, gearing up for a close flyby of Comet Hartley 2 on Nov. 4.
15 October 2010, 12:42 PM ET
A lawsuit has grounded plans for a record-breaking skydiving stunt by Red Bull.
15 October 2010, 08:04 AM ET
My space geek credibility was put to the test when I rode a centrifuge that packed on six times the normal force of gravity.
14 October 2010, 07:39 AM ET
Embryonic stem cells behave very differently outside the pull of Earth's gravity, but understanding that behavior is key to humanity's future in space, researchers suggest.
13 October 2010, 01:13 PM ET
Astronomers have been scratching their heads over how early galaxies pumped out so many baby stars.
12 October 2010, 01:36 PM ET
After making its first solo glide flight Oct. 10, the private suborbital spacecraft SpaceShipTwo could achieve another major milestone — a powered test flight involving the firing of its rocket motor — in the next few months.
12 October 2010, 10:56 AM ET
"Avatar" director James Cameron took a weightless plane ride on Saturday (Oct. 9) to raise money for the high-tech competitions sponsored by the X Prize Foundation.
11 October 2010, 12:55 PM ET
A private unmanned spacecraft designed to ferry supplies to the International Space Station is slated to launch on its first demonstration flight, tentatively scheduled for early November.
11 October 2010, 11:57 AM ET
Virgin Galactic's SpaceShipTwo made its first solo glide test after being dropped from its carrier plane, WhiteKnightTwo, Oct. 10.
10 October 2010, 11:52 AM ET
A private suborbital spaceship flew its first solo test flight today (Oct. 10) from Mojave Air and Space Port in California.
10 October 2010, 11:15 AM ET
Identical twin astronauts Scott and Mark Kelly may have the ultimate brotherly bond. They look alike and talk alike, at times they even joke alike.
07 October 2010, 02:03 PM ET
China launched two new research satellites into orbit on Wednesday.
20 September 2010, 08:49 PM ET
The space shuttle Discovery began its last journey to the launch pad Monday, six weeks before the spacecraft is due to lift off on its final mission to space.
20 September 2010, 12:17 PM ET
U.S. Senate appropriators on Sept. 16 passed a defense spending bill that would put the brakes on the Defense Department's plans to begin development of a new weather satellite constellation in 2011.
14 September 2010, 10:56 AM ET
The first Russian Soyuz rocket flight from South America will occur in early 2011, and Europe's smaller launcher will not debut until the middle of 2011.
09 September 2010, 09:41 AM ET
Two years after setting out for a big Martian crater that could hold clues about the Red Planet's potential to support life, NASA's rover Opportunity has hit a milestone: It's more than halfway there.
07 September 2010, 01:22 PM ET
Space Exploration Technologies (SpaceX) is modifying the software for its Falcon 9 rocket.
03 September 2010, 12:29 PM ET
A grounded space station module could be launched in a few years to act as a hub for inflatable habitats and technology demonstrations.
31 August 2010, 07:29 AM ET
NASA's Phoenix Mars Lander mission data is contributing to a new study on Mars dirt and its atmosphere, long after the Phoenix lander has died.
27 August 2010, 12:52 PM ET
New photos from a powerful NASA spacecraft around Mars have revealed a young crater on Mars with a floor covered in water ice.