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26 March 2015, 10:11 AM ET
A NASA spacecraft is expected make its historic arrival in orbit around the dwarf planet Ceres, marking the first time a human-made probe has visited the cosmic body in history.
26 March 2015, 09:36 AM ET
The Asteroid Redirect Mission (ARM) will employ two vehicles. A robot will capture a boulder from an asteroid and a manned Orion spacecraft mission will rendezvous with it to return samples.
26 March 2015, 08:47 AM ET
Known to many as "G2," the unidentified object making a loop around the monster black hole at the center of our galaxy could be a cloud of gas, or it could be a star, depending on who you ask.
26 March 2015, 08:01 AM ET
NASA has a lot of questions about what happens to people who live in space for long periods of time, and it's almost time to get some answers.
26 March 2015, 08:00 AM ET
An astronaut and a cosmonaut spend an entire year aboard the ISS to provide data on the health implications of space travel.
26 March 2015, 07:00 AM ET
NASA intends to pluck a boulder off a near-Earth asteroid and haul it into orbit around the moon. Agency officials haven't decided upon the target asteroid yet, but the leading contender at the moment is the 1,300-foot-wide 2008 EV5.
26 March 2015, 07:00 AM ET
The National Space Biomedical Research Institute Industry Forum has funded three companies as part of its "Vision for Mars" challenge, which seeks to mitigate the visual problems astronauts experience during long-term spaceflight.
25 March 2015, 06:08 PM ET
Beginning skywatchers often think that the best time to look at the moon is when it is full, but experienced observers know that the moon is at its best for observing when it is around its first-quarter phase.
25 March 2015, 04:37 PM ET
NASA will pluck a boulder off a large asteroid and return it to lunar orbit, rather than target an entire near-Earth object for relocation, agency officials announced today (March 25).
25 March 2015, 04:22 PM ET
Scott Kelly's name tags were intended to be on the space station by now. The two blue and gold badges were among the items that NASA had arranged to send to the orbiting outpost ahead of Kelly launching on a yearlong expedition.
25 March 2015, 03:47 PM ET
Human bodies change on long-duration missions. NASA's Scott Kelly and Roscomos' Mikhail Kornienko will spend a year aboard the ISS to understand how to better keep future crews healthy.
25 March 2015, 02:50 PM ET
The search for alien life doesn’t end within the boundaries of our solar system. Scientists are now search for moons orbiting alien planets that might play host to extraterrestrial life.
25 March 2015, 02:50 PM ET
A recent episode of a fantastic video series called "Shelf Life," produced by the American Museum of Natural history, explores how an archive of astronomical images can help astrophysicists look back in time.
25 March 2015, 02:50 PM ET
The GPS IIF-9 satellite blasted off atop a United Launch Alliance Delta IV rocket from Florida's Cape Canaveral Air Force Station Wednesday (March 25) at 2:36 p.m. EDT (1836 GMT).
25 March 2015, 02:21 PM ET
What astronomers thought was a cloud of gas being stretched as it whipped past our galaxy's central black hole now turns out to look much more like a young, hot compact star.
25 March 2015, 02:02 PM ET
The 15-minute uncertainty of how fast Saturn spins may have been put to rest, using mathematics.
25 March 2015, 02:01 PM ET
Giant winds from black holes can blast gas through galaxies at extraordinary speeds, pulling the plug on star formation, researchers say.
25 March 2015, 01:00 PM ET
Total solar eclipses are one of nature’s grandest events. What is a total solar eclipse? How do they work? And when is the next one? We explain.
25 March 2015, 08:05 AM ET
The private spaceflight company posted a photo of a SpaceX sign at Florida's Cape Canaveral Air Force Station that reads "Landing Complex 1," and also released images of a Dragon cargo vessel about to leave SpaceX headquarters on Feb. 23.
25 March 2015, 08:00 AM ET
NASA's successor to the Hubble Space Telescope is on schedule and budget for now, space agency officials told members of Congress today (March 24).
25 March 2015, 07:58 AM ET
Science experiments conducted on the International Space Station during the orbiting outpost's first yearlong mission could help open the door to deep space for NASA.
24 March 2015, 06:06 PM ET
Opportunity completed the distance covered in the traditional footrace.
24 March 2015, 06:01 PM ET
The golf-cart-size Opportunity rover has now traveled 26.219 miles (42.195 kilometers) — the distance of a marathon race — since touching down on the Red Planet in January 2004, NASA officials announced today (March 24).
24 March 2015, 04:28 PM ET
NASA's Kepler mission team will receive the Smithsonian National Air and Space Museum's 2015 Trophy for Current Achievement. Tom Krimigis of the Johns Hopkins University's Applied Physics Lab, will get the museum's Lifetime Achievement award.
24 March 2015, 02:32 PM ET
NASA's New Horizons' principal investigator Dr. Alan Stern talks to Space.com about the importance of the mission to the "wild west" of our solar system, a place where no other probe has been.
24 March 2015, 01:00 PM ET
Triton's surface is so cold, the ground is made of frozen nitrogen.
24 March 2015, 01:00 PM ET
An American astronaut is about to embark on the mother of all space missions. NASA's Scott Kelly is getting ready to fly up to the International Space Station Friday (March 27) for a yearlong mission that will test his endurance like never before.
24 March 2015, 01:00 PM ET
Neptune's moon Triton has some unique properties among the moons of the solar system, which could make it an interesting location for a space colony.
24 March 2015, 12:40 PM ET
Slated to start at the end of March 2015, NASA astronaut Scott Kelly will spend a year aboard the International Space Station.
24 March 2015, 11:00 AM ET
The International Space Station now plays host to an experiment that could help scientists unlock the mysteries of Alzheimer's disease.
24 March 2015, 07:38 AM ET
Researchers working on NASA's New Horizons mission, which will zoom through the Pluto system on July 14, are asking the public to propose and vote on names for geological features the probe will identify on Pluto and its largest moon, Charon.
24 March 2015, 07:30 AM ET
The debris from the military weather satellite that exploded in orbit last month doesn't pose a threat to any nearby ESA missions, the agency says.