04 November 2015, 01:34 PM ET
After 100 years, general relativity still stands strong.
04 November 2015, 01:32 PM ET
On Nov. 4th, 2015, the Sun 'spits' into space following a M3-class eruption. Earlier in the day the sunspot AR2445 blasted an M1.3 flare, spewing superheated plasma out and back onto itself.
04 November 2015, 10:39 AM ET
The 'International Charter Space & Major Disasters', founded in 2000 by the European, French and Canadian space agencies, pools satellite imagery from multiple satellites with no expectation of return on investment.
04 November 2015, 07:43 AM ET
For the first time ever, astronomers have used instruments onboard the world's largest airborne observatory to examine a massive planet beyond Earth's solar system.
04 November 2015, 07:39 AM ET
Recent observations of the gaps in protoplanetary disks surrounding nearby young stars may not be "proof"of the formation of exoplanets.
04 November 2015, 07:00 AM ET
The 2,000-foot-wide asteroid 2015 TB145 looked like a giant skull in radar images captured on Oct. 30. But the space rock is less haunting in newly released photos taken on Oct. 31, when 2015 TB145 cruised within 300,000 miles of Earth.
04 November 2015, 12:39 AM ET
Proving Einstein wrong, a new discovery opens the door to quantum encryption and "spooky action at a distance."
03 November 2015, 04:59 PM ET
03 November 2015, 03:42 PM ET
Mars can wait — NASA must first go back to the moon.
03 November 2015, 12:01 PM ET
Newfound lunar craters suggest that asteroids that smashed into the moon long ago were very different from the ones that now occupy the asteroid belt. Solving this mystery could shed light on the habitability of the early Earth, scientists say.
03 November 2015, 11:53 AM ET
Neil deGrasse Tyson and Bill Nye "The Science Guy" came out for a daylong celebration of the 35-year anniversary of the Planetary Society, a space exploration advocacy organization.
03 November 2015, 07:40 AM ET
Over the past 260 million years, cratering rates have peaked every 26 million years or so, in tune with a previously noted cycle of mass-extinction events, researchers found.
03 November 2015, 07:00 AM ET
The space agency is hosting a news conference on Thursday at 2 p.m. EST to "announce new findings on [the] fate of Mars' atmosphere," according to a media advisory. You can watch the news conference live here on Space.com, courtesy of NASA TV.
02 November 2015, 03:20 PM ET
Space.com sat down with Grace Potter prior to her performance at New York's Radio City Music Hall to get her thoughts on the current state of space science, its effect on human consciousness and how it's intertwined with music.
02 November 2015, 06:51 AM ET
On Thursday (Oct. 29), the White House released two documents that lay out the nation's official plan for mitigating the negative impacts of solar flares and other types of "space weather."
02 November 2015, 06:50 AM ET
After a death-defying dive toward the surface of Saturn's icy moon Enceladus, the Cassini spacecraft has sent back images from its close encounter.
01 November 2015, 08:08 AM ET
On Halloween night, while ghouls and goblins did their trick-or-treating, an asteroid made a close flyby of Earth, and is now headed back out into space.
01 November 2015, 12:00 AM ET
See amazing images of the night sky and cosmos in Space.com's gallery of cosmic images posted in October 2015.
31 October 2015, 08:33 PM ET
Ripples of green hover over the rocky horizon in this bone-chilling image of an aurora.
31 October 2015, 01:45 AM ET
In the star system DI Cha, two stars glow through a dust ring creating an eerie sight.
31 October 2015, 01:32 AM ET
NASA has called it a "Great Pumpkin." Others have called it "spooky." But this image of a huge asteroid making a Halloween flyby of Earth today looks so much like a skull, it's scary.
31 October 2015, 12:48 AM ET
Paul Sutter shares the recipe for making a spiral galaxy.
31 October 2015, 12:21 AM ET
A huge asteroid the size of the football stadium has a Halloween encounter with Earth today (Oct. 31) and you can watch it online. NASA scientists have dubbed asteroid a cosmic "Great Pumpkin" to celebrate the spooky holiday flyby.
30 October 2015, 12:13 PM ET
Scientists will be treated to a near fly-by of a recently discovered 1300-foot-wide asteroid on Oct. 31st, 2015. They will be using their Deep Space Network's 34-meter (110-foot) DSS 13 antenna in Goldstone, California.
30 October 2015, 11:20 AM ET
As you may already know by now, we're going to have a pretty close encounter on Halloween Saturday (Oct. 31) with a pretty big asteroid. But chances are low that you'll be able to see asteroid 2015 TB145 when it sails by on Halloween. Here's why.
30 October 2015, 07:08 AM ET
Europa's complex chaos regions — which feature numerous cracks, ridges and other signs of geological activity — may offer a way to sample the moon's huge subsurface ocean of liquid water, which is buried beneath perhaps 60 miles of ice.
29 October 2015, 05:46 PM ET
In space, no one can hear you litter (but that doesn't mean it's a good idea).
29 October 2015, 11:57 AM ET
The University of Hawaii's UKIRT Observatory is the third telescope to announce its upcoming closure as part of a controversy that arose over instruments on the slope many native Hawaiians consider sacred.
29 October 2015, 07:28 AM ET
The powerful X-ray flares seen erupting from supermassive black holes are tied to the motion of these behemoths' surrounding "coronas," mysterious features that are sources of high-energy light, a new study suggests.
29 October 2015, 07:28 AM ET
NASA's Dawn spacecraft fired up its thrusters on Friday (Oct. 23) and began spiraling down to an orbit that lies just 230 miles (375 kilometers) from the surface of Ceres, the largest object in the main asteroid belt between Mars and Jupiter.
29 October 2015, 02:57 AM ET
Around the Galaxy Messier 94 a starburst ring is at work birthing new stars into the Universe.
28 October 2015, 04:27 PM ET
In a surprise finding for scientists, the Rosetta spacecraft detected molecular oxygen in the gas streaming off comet 67P/Churyumov-Gerasimenko.