02 October 2015, 08:54 PM ET
From the discovery of water on Mars to stunning reader images of the Supermoon eclipse, don't miss these amazing space images.
02 October 2015, 07:50 AM ET
A planet with liquid water on the surface and titanium oxide deposited by meteors could produce oxygen in the atmosphere without the need for life.
01 October 2015, 07:09 AM ET
Scientists are testing a new microphone technology called the remote acoustic sensor (RAS), which is capable of capturing sounds within extreme and often inaccessible aerospace environments.
29 September 2015, 01:50 PM ET
The twitter account for the upcoming movie "The Martian," due out this Friday (Oct. 2) released a very special video following NASA's announcement of liquid finding water on the surface of Mars.
28 September 2015, 04:19 PM ET
Scientists have found liquid water on Mars — does it mean life can exist there, too?
28 September 2015, 03:53 PM ET
After decades of speculation, scientists now know for sure that liquid, salty water flows on the surface of Mars. See what the discovery means in our infographic.
28 September 2015, 01:01 PM ET
The enigmatic dark streaks called recurring slope lineae (RSL) that appear seasonally on steep, relatively warm Martian slopes are caused by salty liquid water, researchers said.
25 September 2015, 10:09 AM ET
The majority of people believe that intelligent aliens are out there, and many want to reach out. The survey found that men are more likely to believe in intelligent aliens than are women, and also more likely to say humanity should reach out.
24 September 2015, 03:06 PM ET
Encryption isn't the reason we're missing alien signals, as Edward Snowden has suggested. Scientists searching for alien life are looking for other hallmarks of communication.
23 September 2015, 07:11 AM ET
The dark, fingerlike features that creep down steep Martian slopes in warm weather continue to puzzle scientists, and generate debate about the best ways to investigate the features.
21 September 2015, 06:30 AM ET
Scientists are developing a mission concept that would send a probe flying through the plume created by the 100-odd geysers erupting from the south polar region of Saturn's ice-covered moon Enceladus.
20 September 2015, 04:37 PM ET
Jeff Bezos announced a new home for Blue Origin and NASA astronaut Scott Kelly reflected on having six more months in orbit. This is our roundup of the best space stories of the week, for Sept. 18, 2015.
18 September 2015, 11:06 PM ET
From a partial solar eclipse to a new view of Pluto, don't miss these amazing space images.
18 September 2015, 07:52 AM ET
Galaxies in the local universe show no signs of advanced alien civilizations — for now.
17 September 2015, 07:31 AM ET
The Square Kilometer Array (SKA), currently planned to begin construction in 2018, could enable the search for intelligent life to piggy-back on other scientific observations, scouring the galaxy with unprecedented precision.
14 September 2015, 02:00 PM ET
Something strange is happening on Io: The Jupiter moon's vigorous volcanoes are mysteriously offset from where scientists expected, and its underground magma oceans may be the cause.
13 September 2015, 02:37 AM ET
NASA's New Horizons spacecraft beamed home incredible new images of Pluto, scientists found a giant buried ice sheet on Mars and Elon Musk chatted with Stephen Colbert about the future of spaceflight. Here are Space.com's top stories of the week.
10 September 2015, 09:00 AM ET
The "Red Dragon" sample-return mission would grab samples collected by NASA's 2020 Mars rover and send them rocketing back toward Earth, where researchers could scrutinize the material for possible signs of past Red Planet life.
08 September 2015, 07:00 AM ET
While the main thrust of the Europa mission, which NASA aims to launch by the mid-2020s, involves characterizing the icy satellite from afar during dozens of flybys, the space agency is considering sending a small probe down to the surface as well.
02 September 2015, 07:00 AM ET
Light glinting off the ocean of a faraway alien world could help scientists identify potentially habitable exoplanets.
01 September 2015, 07:53 AM ET
Researchers are testing designs for a starshade, which whould block the light from a star while allowing emissions from much dimmer orbiting planets to be spotted by a future space-based telescope.
01 September 2015, 12:00 AM ET
See amazing images of the night sky and cosmos in Space.com's gallery of cosmic images posted in August 2015.
31 August 2015, 07:00 AM ET
NASA already plans to launch a spacecraft to the Jupiter moon Europa in the early to mid-2020s, and it's also mulling a mission to the Saturn satellite Enceladus that would lift off by the end of 2021.
30 August 2015, 11:00 AM ET
A Japanese cargo ship that arrived on Monday at the space station delivered an astrophysics telescope that will join the flagship Alpha Magnetic Spectrometer in hunting for cosmic rays.
30 August 2015, 06:59 AM ET
As astronomers get closer to finding potential signatures of life on faraway planets, a new mathematical description shows how to understand life's spread — and to determine if it's jumping from star to star.
28 August 2015, 09:33 PM ET
From stunning rainbow jets to Saturn's Moon Dione, don't miss these amazing space images.
28 August 2015, 07:00 AM ET
The Syfy network's space-based TV series "Dark Matter" wraps up tonight (Aug. 28) with back-to-back episodes and a shocking revelation.
28 August 2015, 07:00 AM ET
A team of scientists determined that signs of non-Earth-like life could be identified more easily on exoplanets orbiting stars producing relatively low amounts of radiation — but even then only if everything worked out just right.
27 August 2015, 07:00 AM ET
Many astrobiologists are champing at the bit to bring samples back from Saturn's ocean-harboring moon Enceladus, but it may be best to exercise a little patience.
21 August 2015, 07:00 AM ET
Galaxies like the Milky Way may not be the best cradles of life in the universe — giant galaxies devoid of newborn stars and at least twice as massive as the Milky Way could host 10,000 times more habitable planets, researchers say.
20 August 2015, 05:01 PM ET
Astronomers have discovered thousands of extrasolar planets. Researchers hope to find a habitable planet someday.
20 August 2015, 07:25 AM ET
The Missile Defense Agency hopes to draft a preliminary design for a new kill vehicle by the end of the year.
20 August 2015, 07:01 AM ET
The 28-mile-wide (45 kilometers) Jezero Crater emerged as the frontrunner among 30 or so potential locales during the second landing-site workshop for NASA's 2020 Mars rover mission.
17 August 2015, 07:20 AM ET
A tilted orbit and a thick atmosphere could help a distant super-Earth hold onto oceans of water, making it a possible location for life to evolve.
16 August 2015, 09:40 AM ET
The discovery of a baby Jupiter could be an important step in rewriting the book on planet formation.
16 August 2015, 09:00 AM ET
NASA astronauts eat space-grown lettuce for the first time, and burying people on the moon gets easier — here are Space.com's best space stories of the week.