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
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, 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, 07:13 AM ET
A software upgrade has restored the use of Opportunity's flash memory, just in time for the rover to complete its Mars marathon. Opportunity will reach the mileage milestone after just another 47 yards (43 meters) of driving.
24 March 2015, 01:32 AM ET
What do we actually mean by research and how does it help inform our understanding of things?
23 March 2015, 05:49 PM ET
Cosmic detectives are investigating a case of mistaken stellar identity: CK Vulpeculae, an exploding star that was once known as the oldest recorded nova — a nuclear explosion in space — was more likely caused by the merger of two stars.
23 March 2015, 05:05 PM ET
European Astronomers witnessed what they thought was a Nova in the constellation of Vulpecula in 1670.
23 March 2015, 03:01 PM ET
Nitrogen was available on ancient Mars in a form that microbes could have used to build key biomolecules, and atmospheric carbon monoxide has been a feasible energy source for life throughout the Red Planet's history, two new studies suggest.
23 March 2015, 03:01 PM ET
Jupiter may have acted like a giant wrecking ball in the newborn solar system, roaming in to destroy an early generation of inner planets before retreating to its current orbit, researchers say.
23 March 2015, 10:12 AM ET
NASA's Mojave Volatiles Prospector (MVP) is placing a suite of instruments to detect water on the Earthly desert surface. This testbed will fine tune designs for future probes to Mars, the Moon and other solar system bodies.
22 March 2015, 04:08 PM ET
An eclipse passed through the sky in part of the world, a major solar storm rained down on St. Patrick's Day, and "Christmas lights" were seen on Mars. Here are Space.com's picks for the best space stories of the week.
21 March 2015, 04:00 PM ET
From St. Patrick's day in space to a spectacular solar eclipse, don't miss these amazing space images of the week for March 21, 2015.
21 March 2015, 11:40 AM ET
The online project Spaceprob.es is a one-stop-shop website for learning about all the human-made space probes currently studying the cosmos, and features sharp graphic designs of all the probes, available as posters and stickers.
20 March 2015, 12:18 PM ET
Molecular nitrogen – one of the key ingredients that put together the young solar system – has been found on a comet by the European Space Agency's Rosetta spacecraft. See what the discovery means for our understanding of the planets and solar system.
20 March 2015, 07:45 AM ET
20 March 2015, 07:00 AM ET
Astrophotographer Miguel Claro took the image from Juromenha, Dark Sky Alqueva Reserve, Portugal on Jan. 11, 2015.
20 March 2015, 05:23 AM ET
On March 20, 2015, the moon blocked the sun as seen from Earth in a total solar eclipse. See photos from the only total solar eclipse of 2015 in this Space.com gallery.
20 March 2015, 01:34 AM ET
A bizarre crystal-like mineral recently found in a meteorite that crashed to Earth 15,000 years ago adds more support for the idea that the fragile structure can survive in nature. But how it formed at the beginning of the solar system is still a mystery.
19 March 2015, 05:15 PM ET
A fleet of European satellites will chase the only total solar eclipse of 2015 from space on Friday (March 20) in a bid to capture truly out-of-this-world views of the celestial event.
19 March 2015, 04:26 PM ET
A dark line more than half a million miles long curves across the lower half of the sun in a gorgeous photo snapped by a NASA spacecraft. The line — what scientists call a solar filament — is longer than 67 Earths lined up side-by-side.
19 March 2015, 02:01 PM ET
Giant dust clouds seen in the early universe may have been created by exploding stars, a discovery that suggests supernovas were prolific space dust factories for ancient galaxies, scientists say.
19 March 2015, 01:00 PM ET
For years, many astronomers thought planets around red dwarfs were probably uninhabitable. But recently, the thinking has begun to change.
19 March 2015, 12:00 PM ET
An unexpected leak of a chemical designed to tag complex organic molecules in samples collected by NASA’s Mars rover Curiosity appears to have serendipitously done its job.
19 March 2015, 07:00 AM ET
NASA's MAVEN spacecraft spotted ultraviolet "Christmas light" auroras dancing in the Red Planet's atmosphere for five days leading up to Dec. 25, 2014.
18 March 2015, 05:08 PM ET
A total solar eclipse will be visible in parts of Europe, Asia and Africa on Friday (March 20), but eclipses can be dangerous, too, and no one should ever look directly at the sun — even during an eclipse.
18 March 2015, 04:08 PM ET
NASA's Lunar Reconnaissance Orbiter has spotted the crater left by the powerful moon impact of March 17, 2013.
18 March 2015, 02:47 PM ET
After astronomers recorded a bright flash on the Moon in March 2013 NASA tasked it Lunar Reconnaissance Orbiter to compare old and new images. Clues led the LRO team to find an 18-meter-wide crater, one of over 25 fresh impacts.
18 March 2015, 12:31 PM ET
Particles within a comet's tail can quickly whip up to the speed of the solar wind, according to observations of a comet in 2013.
18 March 2015, 11:00 AM ET
Space.com readers sent in their photos of the amazing auroras in 2015, including views captured during an intense geomagnetic storm on March 17-18, 2015.
18 March 2015, 07:00 AM ET
A new asteroid-hunting computer program will help amateur astronomers and citizen scientists identify potentially hazardous space rocks faster and more accurately, NASA officials say.
17 March 2015, 10:00 PM ET
For about 50 years, humanity has sent orbiters, probes and landers to the Red Planet. Here's a look at all of the missions to Mars to date, both the successes and the failures.