Astronomy columnist explains why it's hot in July, why we can see satellites with the naked eye and why the North Star isn't the brightest, among other topics
Phobos-Grunt appears to be stuck in Earth orbit. In two weeks, if its thrusters aren't restarted, the spacecraft will be lost completely
Lift-off from Kazakhstan's Baikonur Cosmodrome is set for 3:16 P.M. EST. The main goal is to grab some dirt from Phobos' surface and return the samples to Earth in 2014
Researchers will use the data collected throughout the Mars500 mission to better understand the physical and psychological challenges that astronauts will face on long-duration missions
NASA Earth-observing satellites have had some bad launch luck. The new probe will collect data for short-term weather forecasting and long-term climate monitoring
It's the first probe ever built to track fast weather systems and long-term climate change
Chang'e 2's mission may be a signal of China's expanding prowess in space and a showcase for the nation's strategic intentions
The Spaceport America Terminal Hangar Facility will be used by Richard Branson's Virgin Galactic
The exact timing and location of ROSAT's atmospheric reentry are uncertain
The International Space Station likely won't have to be vacated next month
A new study finds that previous estimates for this gaseous planet's swirling rotation were inaccurate
A reusable rocket and spaceship could open the gates of Mars for humanity, company CEO Elon Musk announced
The defunct Upper Atmospheric Research Satellite (UARS) reentered the atmosphere at 12:01 A.M. Eastern time (0401 GMT) on Saturday, falling into the Pacific at 14.1 degrees south latitude and 189.8 degrees east longitude...
More than 50 new alien planets—including one so-called super-Earth that could potentially support life—have been discovered by an exoplanet-hunting telescope
For instance, for two decades, the general public was able to obtain car passes to visit KSC and watch a shuttle launch, but this was never resumed after the attacks
There will not be enough trained astronauts to meet the demands of future space station missions, according to a new report
New photos from NASA's Lunar Reconnaissance Orbiter show the Apollo moon landing sites in high-resolution, revealing details that could solve historical mysteries about the first manned moon landings...
The movie Apollo 18 claims to reveal decades-old footage of astronauts on a secret mission two years after Apollo 17 --the last real expedition to the moon. In actuality, NASA did prepare for Apollos 18, 19 and 20...
If Russian engineers don't figure out what caused a recent rocket failure soon, the ISS may have to start operating without a crew
Hurricane Irene is a monster storm on Earth. But it's just a baby compared to the massive cyclones of Jupiter and Saturn