08 October 2015, 03:30 PM ET
A new photo beamed home by NASA's New Horizons spacecraft, which performed history's first flyby of Pluto this past July, reveals that the dwarf planet's skies have an azure tinge.
08 October 2015, 02:01 PM ET
A series of freshwater lakes within Mars' 96-mile-wide Gale Crater likely persisted for hundreds or thousands of years at a time, and perhaps even longer, according to the new study, which is based on observations made by NASA's Curiosity rover.
08 October 2015, 12:05 PM ET
Our universe is actually really simple, it's just our cosmological theories that are getting needlessly complex, argues one of the world's leading theoretical physicists.
08 October 2015, 12:01 PM ET
The Dream Chaser space plane, which would continue the legacy of NASA's shuttle program, is getting ready for a second stage of flight testing.
08 October 2015, 10:09 AM ET
Leaders of the private spaceflight industry gathered in New Mexico to discuss pressing issues, including the fate of the International Space Station.
08 October 2015, 09:30 AM ET
A United Launch Alliance Atlas V 401 will launch the NROL-55 mission for the National Reconnaissance Office (NRO). Launch is scheduled for Oct. 8, 2015.
08 October 2015, 09:28 AM ET
A United Launch Alliance Atlas V rocket is scheduled to launch the NROL-55 mission for the National Reconnaissance Office at 8:49 a.m. EDT (1249 GMT) Thursday, along with 13 tag-along cubesats. Watch it live here at Space.com, beginning at 8:29 a.m. ET.
08 October 2015, 09:20 AM ET
A United Launch Alliance Atlas V rocket blasted off today (Oct. 8) from Vandenberg Air Force Base in California, carrying a classified payload for the National Reconnaissance Office (NRO) and 13 tiny spacecraft sponsored by NASA and the NRO.
08 October 2015, 09:01 AM ET
The United Launch Alliance rocket launched the NROL-55 mission for the National Reconnaissance Office (NRO) on Oct. 8th, 2015 from the Vandenberg Air Force Base in California. 13 cubesats also flew to orbit on the rocket.
07 October 2015, 05:58 PM ET
A marketing agency that represents former NASA astronauts is launching a unique take on its clients' spacesuited portraits, working with a popular print house to create a series of limited edition, illustrated art posters that celebrate the space traveler
07 October 2015, 05:51 PM ET
A strong geomagnetic storm is amplifying the Earth's northern lights tonight (Oct. 7), making auroras potentially visible as far south as Pennsylvania, Oregon and Iowa, space weather experts say.
07 October 2015, 05:11 PM ET
Mars has water trapped in the polar ice caps. More water may lie just beneath the surface. A new study suggests that water also flows on the surface.
07 October 2015, 04:59 PM ET
A United Launch Alliance Atlas V rocket is scheduled to launch the classified NROL-55 mission for the National Reconnaissance Office at 8:49 a.m. EDT (1249 GMT) Thursday from Vandenberg Air Force Base in California. Watch it live here at Space.com.
07 October 2015, 04:00 PM ET
It's officially autumn, and time once again to seek out the two most distant planets of our solar system, Uranus and Neptune.
07 October 2015, 03:30 PM ET
If you’re delighted by the ever-changing sky, here are some of its brightest inhabitants to watch for this week just before dawn.
07 October 2015, 01:00 PM ET
Just 32 light-years from us, a star called AU Microscopii violently flares much more strongly than our Sun. The Hubble Space Telescope and Very Large Telescope have now picked up 5 distinct arches in the flattened cloud of gas.
07 October 2015, 01:00 PM ET
Scientists were looking for planets forming in the large disk of dust surrounding a young star when they encountered a surprise: fast-moving, wavelike arches racing across the disk like ripples in water.
07 October 2015, 12:12 PM ET
Jeff Bezos' private spaceflight company Blue Origin is known for its secrecy, but both the company and Bezos may be crafting a more public image.
07 October 2015, 11:57 AM ET
Last week, astronomers, astrophysicists, data scientists and programmers came together at New York University to try to solve some of astronomy's toughest problems — in just five days.
07 October 2015, 10:09 AM ET
Dava Newman, NASA Deputy Administrator, explains how solar-electric propulsion, deep space atomic clocks, spacesuits, and laser communication are key technologies for humans to explore Mars and beyond.
07 October 2015, 07:01 AM ET
A sounding rocket is scheduled to launch from NASA's Wallops Flight Facility in Virginia at 7 p.m. EDT Wednesday and deploy colorful clouds of barium and strontium. You can watch live here at Space.com, thanks to a webcast provided by NASA TV.
07 October 2015, 07:01 AM ET
A team from Israel called SpaceIL has signed a contract to launch its robotic lunar lander toward the moon aboard a SpaceX Falcon 9 rocket in the second half of 2017. SpaceIL is therefore a strong contender to win the Google Lunar X Prize.
07 October 2015, 07:00 AM ET
A prolific comet hunter has donated almost 60 years' worth — and counting! — of historic observation logs to be pored over by the public.
06 October 2015, 04:30 PM ET
In "The Martian," Mark Watney deals with a lot of dangerous situations — food and communications being a couple of them. But what if his camp got hit by a solar storm? How could he protect himself?
06 October 2015, 04:22 PM ET
Earlier this month, the ExoMars launch date was pushed back by a couple of months. Instead of launching in January 2016, the European mission will launch the following March — but still get to Mars at nearly the same time. How is this possible?
06 October 2015, 02:03 PM ET
If all goes according to plan, a NASA rocket launch Wednesday evening (Oct. 7) will produce multicolored patches of light in the darkening sky visible to many people in the Middle Atlantic and Northeast United States.
06 October 2015, 01:20 PM ET
Skywatchers have a chance to see some "shooting stars" this week during the annual Draconid meteor shower. The meteor display, which peaks overnight on Thursday and Friday (Oct. 8 and 9) is caused by the remains of a comet raining down on Earth.
06 October 2015, 12:25 PM ET
If you're stranded, would you rather be on the moon or Mars?
06 October 2015, 12:11 PM ET
Takaaki Kajita and Arthur B. McDonald will share this year's Nobel Prize in physics for helping to reveal that subatomic particles called neutrinos can change flavors, findings that meant these exotic particles have a teensy bit of mass.
06 October 2015, 11:00 AM ET
See how NASA and Ridley Scott brought Mars exploration to the public with 'The Martian,' a film starring Matt Damon as a stranded astronaut.
06 October 2015, 10:50 AM ET
“The Martian” makes being stranded on the cold red planet seem almost romantic. But what are your real survival odds? XPRIZE Founder and CEO Peter Diamandis reasons out his personal choice in this inaugural episode of #AskPeter.
06 October 2015, 10:42 AM ET
Using stereo image data from ESA's Mars Express, German Aerospace Center (DLR) scientists created this highly accurate view of the terrain fictional astronaut Mark Watney"(played by Matt Damon) would of had to traverse to find his way home.
06 October 2015, 10:24 AM ET
Blue Origin said Sept. 30 that it has completed more than 100 developmental tests of its BE-4 engine, which the company is building both for ULA and itself.
06 October 2015, 10:20 AM ET
In life, astronaut Sally Ride privately put into order her personal objects, artifacts, awards and papers, which will now forever represent her as America's first woman in space in the National Air and Space Museum.
06 October 2015, 10:10 AM ET
irgin Galactic announced Sept. 28 it has made “significant progress” on the engines that it will use on its LauncherOne small satellite launch vehicle.
06 October 2015, 08:12 AM ET
Why do pulsars, one of the universe's most reliable clocks, occasionally speed up? A new theory suggests there's a perfectly flowing fluid at the heart of this mystery.