UC Irvine astronomers have shown how the Milky Way galaxy's iconic spiral arms were formed - through an intergalactic collision.
NASA administrator Charles Bolden has confirmed that the space agency is ready to develop its next-gen Space Launch System (SLS).
Astronomers at the Chandra X-ray observatory say they've observed a planet so close to an active star that it's evaporating.
Astronomers say they've observed extreme brightness changes on a nearby brown dwarf that could indicate a storm more dramatic than any ever before seen on a planet.
Astronomers using the HARPS planet hunter have discovered more than 50 new exoplanets, including 16 super-Earths, one of which orbits at the edge of the habitable zone of its star.
When the 9/11 terror attacks took place ten years ago, they were filmed by the only American not on earth at the time.
All the gold in the Earth's crust was delivered there by meteorites, accoring to researchers at the University of Bristol.
Astronomers have for the first time discovered a previously unknown exoplanet through its effects on another planet in the system.
NASA is hoping to launch its twin Grail spacecraft this morning, after a temporary delay because of poor weather.
NASA's Solar Dynamics Observatory has discovered new characteristics of solar flares - with great timing, as one's due to hit Earth tomorrow.
Put on your hard hats, everybody: NASA's warning that a defunct satellite is set to hit the earth sometime in the next six weeks.
A new report published by the National Research Council recommends that NASA should "take steps" to maintain a highly trained astronaut corps - even as the United States enters an extended post-shuttle era.
Astrophysicist Rosanne Di Stefano compares it to the Hollywood blockbuster 'Speed' - a newly-described type of star that's destined to explode if it slows down.
NASA is preparing for a number of worst-case scenarios that could leave the International Space Station (ISS) without a crew for an extended period of time.
A nostalgic NASA - clearly pining for the glory days of its manned space program - has released a slew of new pictures depicting the Apollo 12, 14 and 17 landing sites.
A spaceship financed by Amazon founder Jeff Bezos was lost during a test flight late last week.
It's a good thing Domino's no longer guarantees it can get pizza to any location in 30 minutes or less.
NASA's Mars rover Opportunity - recently arrived at the Endeavour crater - has found a rock that's different from anything it's seen before.
A recently published report warns that space junk poses a clear and present danger to orbiting satellites and the International Space Station (ISS).
A team of European astronomers have discovered a star that by rights shouldn't exist - it's simply not dense enough for current models to explain its formation.