28 July 2015, 07:30 AM ET
Measurements by Curiosity's rock-zapping ChemCam laser and another instrument revealed that a chunk of bedrock dubbed Elk contains high levels of silica and thus is a good candidate to preserve ancient organic molecules, if any exist in the area.
28 July 2015, 07:00 AM ET
A new image captured by NASA's Cassini spacecraft highlights an impact basin on the Saturn moon Tethys. Called Odysseus, the 280-mile-wide (450 kilometers) impact basin is nearly half as wide as the satellite itself.
27 July 2015, 10:57 PM ET
It took almost a decade for NASA’s New Horizons spacecraft to navigate its way across the solar system. Was it worth the wait?
27 July 2015, 05:50 PM ET
Scientists and engineers had to work at breakneck speed to get New Horizons launched during a brief window in January 2006, or the probe's highly anticipated Pluto encounter would have been pushed into 2016 at the earliest.
27 July 2015, 10:11 AM ET
Weak solar activity could slowly fire up the ocean circulation mechanism, increasing the amount of warm water and air flowing to Greenland.
27 July 2015, 08:52 AM ET
Atmospheric pressure at the surface of the icy dwarf is surprisingly low. Previous Earth-based estimates were more than double New Horizons’ reading.
27 July 2015, 07:00 AM ET
NASA's planet-hunting Kepler space telescope continues to zero in on the first "alien Earth" despite being hobbled by a glitch more than two years ago. The mission's huge dataset should keep researchers busy for decades, team members say.
27 July 2015, 06:00 AM ET
The famous bright spots at the bottom of Ceres' Occator crater appear to be sublimating material into space, creating a localized atmosphere within the walls of the 57-mile-wide (92 kilometers) hole in the ground, new observations by NASA's Dawn spacecraf
26 July 2015, 06:00 AM ET
Planet like an older Earth is found, Stephen Hawking signs on to an ambitious search for extraterrestrial life and a faulty strut is proposed as the cause of SpaceX's rocket explosion in Space.com's top news stories of the week.
26 July 2015, 06:00 AM ET
From amazing new views of Pluto's glaciers and mountains to artist's depictions of newfound "Earth cousin" Kepler-452b and photos of sunspots captured from Mars by NASA's Curiosity rover, don't miss these stunning space images.
24 July 2015, 04:08 PM ET
Amazing new photos of Pluto from NASA's New Horizons spacecraft show a dwarf planet covered in rugged terrain, exotic flowing ices and a hazy atmosphere. NASA unveiled the new discoveries on July 24, 2015.
24 July 2015, 04:03 PM ET
NASA New Horizons' principal investigator Alan Stern and co-investigator Michael Summers break down the new discoveries at a press conference on July 24th, 2015.
24 July 2015, 03:58 PM ET
NASA New Horizons' deputy project scientist Cathy Olkin and co-investigator William McKinnon reveal Pluto composition data at a press conference on July 24th, 2015.
24 July 2015, 02:34 PM ET
The northwestern Sputnik Planum and Hillary Montes is highlighted in this simulated fly-by. Created from images obtained from NASA's New Horizons probe's close fly-by.
24 July 2015, 01:44 PM ET
Asteroid 2011 UW158 is irregularly shaped and has an unusually fast spin. The asteroid is 2000X1000 feet across (600X300 meters) and made its closest approach to earth at 1.5 million miles on July 19th, 2015.
24 July 2015, 12:35 PM ET
This stunning space wallpaper shows the possible appearance of the planet Kepler-452b, the first near-Earth-size world discovered in the habitable zone of star similar to our sun.
24 July 2015, 12:10 PM ET
NASA's New Horizons probe is about to lift the veil on Pluto. See Space.com's complete coverage of the spacecraft's epic July 14 flyby of the dwarf planet.
24 July 2015, 11:42 AM ET
Four images of the icy dwarf were snapped 280,000 miles (450,000 kilometers) away, which "shows features as small as 1.4 miles (2.2 kilometers)," according to New Horizons' team.
24 July 2015, 11:26 AM ET
NASA unveiled a false-color look at Pluto Thursday (July 23) to highlight the weird differences in terrain on the dwarf planet. The enhanced color allows scientists to detect differences in the composition and texture of Pluto's surface.
24 July 2015, 11:17 AM ET
A vast cluster of dead galaxies roughly 300 million light-years from Earth may hold as much as 100 times more dark matter than visible matter, researchers say.
24 July 2015, 11:12 AM ET
This stunning space wallpaper shows Pluto in color as New Horizons scientists combined four images from the spacecraft Long Range Reconnaissance Imager (LORRI) with color data from the Ralph instrument to create this enhanced color global view.
24 July 2015, 11:00 AM ET
A super-dense, spinning star punched a hole right through its stellar neighbor, carving off a giant cloud of dust and ejecting it away at nearly 15 percent the speed of light, images from NASA's Chandra X-ray Observatory reveal.
24 July 2015, 10:17 AM ET
A G2-type star (Kepler 452), the same class as the Sun, harbors the planet Kepler-452b. The planet is 60 percent larger than Earth and receives 10 percent more energy from its Sun than the Earth.
24 July 2015, 06:00 AM ET
Japan's asteroid-scooping spacecraft Hayabusa 2 is on its way to an asteroid known as 1999 JU3. Now, the country's agency is inviting the public to come up with a clever name for the mission's target.
24 July 2015, 06:00 AM ET
A group of pioneers magically transported to the surface of Kepler-452b would instantly realize they weren't on their home planet anymore; they'd feel this truth in their bones and muscles, thanks to the increased surface gravity.
23 July 2015, 06:03 PM ET
Get ready, Plutophiles: More exciting science from the New Horizons mission to Pluto will be announced in a media event today (July 24).
23 July 2015, 02:43 PM ET
Astronomers have announced the discovery of planet Kepler-452b, orbiting a star very much like the sun but older and hotter.
23 July 2015, 12:28 PM ET
Kepler-452b size is important because it receives 10 percent more energy from its Sun than we do from ours. That mass protects it from experiencing "runaway greenhouse effect and the loss of its water inventory," according to NASA.
23 July 2015, 12:15 PM ET
NASA scientists announced the discovery of an Earth-like world, Kepler-452b, on July 23, 2015. Here's a look at that closest Earth twin in pictures.
23 July 2015, 12:00 PM ET
NASA's planet-hunting Kepler space telescope has spotted more than 500 new potential alien planets, including an Earth-like planet amid a dozen that may be capable of supporting life.
23 July 2015, 09:46 AM ET
A simulation has been developed to show how the gravitational field of a black hole disrupts a star. As the star is ingested, an accretion disk of stellar material is formed.
23 July 2015, 08:00 AM ET
In a new teleconference at 12 p.m. EDT (1600 GMT) Thursday (July 23), NASA will unveil a potentially exciting discovery regarding the search for alien planets by the Kepler Space Telescope.