30 April 2015, 07:00 AM ET
The search for life beyond Earth homes in on water, whose unique properties make it critical to life as we know it and whose abundance throughout the solar system is becoming increasingly clear to scientists.
28 April 2015, 01:21 PM ET
The Senate voted unanimously April 27 to confirm Dava Newman as NASA's deputy administrator, more than six months after she was nominated.
28 April 2015, 09:52 AM ET
27 April 2015, 01:30 PM ET
The Nexus for Exoplanet System Science, or NExSS, will take a multidisciplinary approach to the hunt for alien life, NASA officials said.
27 April 2015, 11:45 AM ET
27 April 2015, 09:00 AM ET
Studying the hazy atmosphere of Saturn's largest moon, Titan, should help researchers better understand the air of faraway exoplanets, a new study reports.
24 April 2015, 01:00 PM ET
The star Tau Ceti, which lies just 11.9 light-years from Earth, is thought to host five exoplanets, two of which have been posited to be potentially habitable. But a new study throws some cold water on these worlds' life-supporting ability.
24 April 2015, 12:47 PM ET
24 April 2015, 07:18 AM ET
24 April 2015, 07:00 AM ET
A study of Yellowstone's hot springs has revealed new clues about how organic materials might get preserved in similar environments on the Red Planet, bettering our chances of finding possible signs of life.
22 April 2015, 07:00 AM ET
Exoplanet 51 Pegasi b, located ~50 light years away in Pegasus, was suspected in 1995 from the motion of its star. Now the HARPS instrument at ESO’s La Silla Observatory has detected the spectrum of that star's visible light reflected off the planet.
22 April 2015, 07:00 AM ET
Scientists measured the spectrum of visible light reflected off the exoplanet 51 Pegasi b, which lies about 50 light-years from Earth. Back in 1995, 51 Pegasi b became the first alien world ever found around a sunlike star.
18 April 2015, 01:20 PM ET
From the first color image of Pluto to an awesome new SpaceX Video, don't miss these amazing space images of the week for April 19, 2015.
16 April 2015, 01:51 PM ET
NASA astronaut John Grunsfeld (now Associate Admin. for the Science Mission Directorate) looks back at how Hubble’s upgradable design can help us create more powerful space-based observatories.
16 April 2015, 07:30 AM ET
A NASA telescope co-discovered one of the most distant planets ever discovered, a gas giant about 13,000 light-years away from Earth.
15 April 2015, 05:55 PM ET
It's now time to start planning out a future space telescope that will tackle the next big frontier in astronomy and astrophysics, researcher Mario Livio says — the search for signs of life beyond our neck of the cosmic woods.
15 April 2015, 11:37 AM ET
The world looks different to Neil deGrasse Tyson because he’s an astrophysicist. When a great communicator gets his hands on an elegant tool, enlightenment (and, yeah, a little ego) ensues. But why did @NeilTyson choose Twitter? He tells Space.com.
13 April 2015, 01:01 PM ET
Liquid water likely lurks just below the surface of Mars on cold winter nights, according to new research. Is it enough to support microscopic life-forms?
12 April 2015, 10:12 AM ET
A total lunar eclipse wowed skywatchers and two private spaceflight companies tackled big challenges. These, and more, are Space.com's picks for the best space stories for the week of April 12.
12 April 2015, 09:34 AM ET
From a cosmic garden to fishing for space junk, don't miss these amazing space images of the week for April 12, 2015.
09 April 2015, 10:40 AM ET
Researchers at NASA's Ames Research Center in California generated three key components of RNA and DNA in the lab, by exposing commonly occurring ring-shaped molecules of carbon and nitrogen to radiation under spacelike conditions.
08 April 2015, 01:01 PM ET
The protoplanetary disc around a constellation of Taurus star, named MWC 480, harbors enough methyl cyanide (CH3CN) to "fill all of Earth’s oceans," according to the European Southern Observatory.
07 April 2015, 04:50 PM ET
Solid signs of alien life will be spotted within 10 years, and definitive evidence will roll in within 20 to 30 years, NASA chief scientist Ellen Stofan said Tuesday (April 7).
07 April 2015, 03:45 PM ET
A telescope will soon allow astronomers to probe the atmosphere of Earthlike exoplanets for signs of life. To prepare, astronomer Lisa Kaltenegger and her team are modeling the atmospheric fingerprints for hundreds of potential alien worlds.
07 April 2015, 08:01 AM ET
When it comes to the search for life beyond Earth, the mantra is always 'follow the water.' But could an environment without H2O give rise to life in a different form? Scientists now say it's theoretically possible.
07 April 2015, 07:01 AM ET
A new study sheds light on how exoplanets in tightly-packed solar systems interact with each other gravitationally by affecting one another's climates and their abilities to support alien life.
06 April 2015, 07:35 AM ET
A new exhibit at the American Museum of Natural History in New York highlights extreme examples of life on Earth, and what they may tell us about life elsewhere in the universe.
05 April 2015, 10:15 AM ET
What were our favorite stories of the week? This week had something for every kind of space fan. Find out our favorite stories of the past seven days below:
04 April 2015, 06:25 PM ET
From strange 'Hollows' on Mercury to eerie green space clouds, don't miss these amazing space images of the week for April 4, 2015.
03 April 2015, 07:00 AM ET
Scientists are still trying to understand what causes Mars' myriad dark streaks, and what these features might mean for the possible existence of Red Planet life.
01 April 2015, 08:00 AM ET
Ancient Mars may have featured oceans with huge, slow-moving waves. Studying the shorelines these waves may have carved could shed light on the ancient Martian climate, such as whether or not it had seas long enough for life to potentially develop.
01 April 2015, 12:00 AM ET
See amazing images of the night sky and cosmos in SPACE.com's gallery of cosmic images posted in March 2015.