03 September 2015, 05:53 PM ET
A new spacecraft will test ideas to find gravitational waves in the universe
03 September 2015, 05:00 PM ET
NASA is working to develop laser-based communications systems that will allow far-flung spacecraft to beam data home far faster than previously possible.
03 September 2015, 03:53 PM ET
The radar instrument on NASA's $916 million Soil Moisture Active Passive (SMAP) spacecraft stopped returning data on July 7, a few months after the satellite began its science mission. The SMAP team now views the instrument's recovery as unlikely.
03 September 2015, 03:05 PM ET
To convincingly play an astronaut, you need a technically accurate script. Science-fan Matt Damon tells Space.com's @DavidSkyBrody. why he's thrilled to 'inhabit' Mars castaway Mark Watney, central character of author Andy Weir's book.
03 September 2015, 01:44 PM ET
Technology created to remove plant-killing ethylene from International Space Station crop growing experiments has been applied to an air purification system on Earth.
03 September 2015, 10:27 AM ET
See Martian photo illusions like the "Face on Mars," "Bio Base" and others, all created by tricks of light.
03 September 2015, 10:00 AM ET
NASA's Mars rover Curiosity is beaming home amazing photos of the Red Planet.
03 September 2015, 06:45 AM ET
A so-called "floating spoon" on Mars spotted by NASA's Curiosity rover is cooking up a storm on the Internet, but it's actually a cool rock formation sculpted over time by the Martian winds, officials with the space agency say.
03 September 2015, 06:00 AM ET
Scientists found that the median particle size in a set of 20 different Apollo soil samples held in laboratories for research use has decreased by more than half since the samples were first measured 40 years ago.
03 September 2015, 06:00 AM ET
The proposed Comet Hitchhiker spacecraft would sling itself from one comet or asteroid to another using a harpoon and a superlong tether. This strategy could allow relatively fast and low-cost exploration of distant targets, its developers say.
02 September 2015, 04:58 PM ET
Astronomers have long struggled with how young planets form around pairs of stars without destroying themselves, but new research suggests it can be done with the perfect setup: a massive, slightly elongated disk of debris from the star.
02 September 2015, 04:19 PM ET
A pressure chamber used to simulate harsh environments, such as what exists on Venus, Saturn's moon Titan and the giant planets, is open for business at NASA's Glenn Research Center.
02 September 2015, 02:42 PM ET
NASA's Mars Atmosphere and Volatile EvolutioN (MAVEN) mission is exploring the upper atmosphere and using the light of stars to determine its composition. The mission hopes to better understand where the water went on the Red Planet.
02 September 2015, 07:00 AM ET
A new view of the Prawn Nebula shows "cosmic recycling" at work: Glowing clusters of newborn stars illuminate surrounding gas, expelled from an earlier stellar generation, which will eventually form into even newer stars.
02 September 2015, 07:00 AM ET
Light glinting off the ocean of a faraway alien world could help scientists identify potentially habitable exoplanets.
02 September 2015, 06:00 AM ET
The MPG/ESO 2.2-metre telescope at the La Silla Observatory in Chile was used to deliver a new stunning view of the nebula (also known as Gum 56).
01 September 2015, 02:51 PM ET
An icy moon of Saturn hangs against the face of its giant parent planet in a breathtaking new image captured by NASA's Cassini spacecraft.
01 September 2015, 12:17 PM ET
An illustrated Web comic by the cartoonist Boulet explains his passion for stargazing, and takes readers on an awe-inspiring tour of the cosmic landscapes made visible by science.
01 September 2015, 07:57 AM ET
The Pluto flyby video gives a probe's-eye view of the historic July 14 encounter, during which the New Horizons spacecraft zoomed within just 7,800 miles (12,550 kilometers) of the dwarf planet's frigid surface.
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, 07:33 AM ET
Eye-popping Venus, low-riding Mercury and stealthy Saturn will all make appearances among the bright objects in September's night sky, and this day-by-day description shows how to find them.
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, 06:01 PM ET
Six scientists will live together, but totally isolated from the rest of the world, in a mock Mars colony for 365 days to learn about the psychological toll of a mission to Mars.
31 August 2015, 04:45 PM ET
Active Region 2403 was very lively between Aug. 21-26, 2015. NASA Solar Dynamics Observatory snapped imagery of the Sunspot group writhing across the surface and breaking up into several distinct groups.
31 August 2015, 03:06 PM ET
Cassini has once again turned to Enceladus, the enigmatic moon of Saturn.
31 August 2015, 03:01 PM ET
Europe's XMM-Newton telescope took an X-ray scan of the Milky Way's core, capturing some dazzling high-energy delights.
31 August 2015, 02:48 PM ET
NASA began an early feasibility study for missions to the distant, mostly-ignored ice-giants Uranus and Neptune, a senior agency official said here Aug. 24.
31 August 2015, 12:55 PM ET
Aquarius and Capricornus host a couple of star clusters that can be revealed in detail with a telescope. Saturn is visible after nightfall. Mars, Venus and Jupiter are pre-dawn planets this month. Lastly, a Supermoon...
31 August 2015, 10:27 AM ET
On Sept. 27th, 2015, Earthlings will be treated to a skywatching event not seen seen 1982. The 'Supermoon' will also turn a reddish hue due to the moon passing directly behind the Earth, into its shadow.
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, 11:24 AM ET
If funded, the tiny Twinkle telescope will look at the atmospheres of close alien planets, including "super-Earths."
30 August 2015, 11:10 AM ET
Mars One seeks billionaires, Ceres and Dione get close-ups, a Martian hoax is debunked and Stephen Hawking solves a black hole conundrum in Space.com's top stories for this week.