27 August 2015, 10:05 AM ET
Mars is not going to look as big as the moon in the night sky. But the fact that we want it to may say something about us.
27 August 2015, 08:18 AM ET
Here are some misconceptions about Mars that just won't die.
26 August 2015, 09:03 AM ET
Hawking and two colleagues propose that information isn't destroyed at the heart of a black hole; it's stored at the black hole's boundary in holographic form.
24 August 2015, 02:52 PM ET
Solar explosions can threaten power grids even in areas near the equator, places long thought safe from such disruptions from the sun, say researchers who studied a weird flow of electricity pulsing above the equatorial regions.
20 August 2015, 01:28 PM ET
Something mysterious is happening on the surface of Pluto: No matter how much nitrogen the atmosphere releases into space, it's still chock-full of the stuff. New work examines the possible culprits for the stealthy nitrogen resupply.
20 August 2015, 01:21 PM ET
For the last few months, rumors have circulated that a big asteroid will slam into Earth near Puerto Rico between Sept. 15 and Sept. 28, wreaking widespread destruction. Don't believe the hype.
18 August 2015, 02:10 PM ET
An astrophotographer spotted a beautifully-formed solar prominence that looks like a giant version of the famous Parisian landmark.
14 August 2015, 06:53 PM ET
The moon posed no obstacle as the Perseid meteor shower peaked last night, giving skywatchers the best views of shooting stars in years — even in areas that normally have too much light to see a thing. And the show will be back on tonight, although there
14 August 2015, 06:09 PM ET
Astronomers have detected the smallest alien planet yet to be directly photographed by a telescope on Earth, a methane-shrouded gas giant much like a young Jupiter. The planet 51 Eridani b orbits a star 96 light-years from Earth and resembles a young Jupi
14 August 2015, 02:53 PM ET
After two giant explosions in Tianjin, a black plume of smoke snaked over China's Bohai Sea.
11 August 2015, 12:10 PM ET
The annual Perseid meteor shower is typically the most spectacular "shooting star" display for people in the Northern Hemisphere, and this week, skywatchers could be in for a remarkable show.
11 August 2015, 11:58 AM ET
For the first time (at least officially), NASA astronauts on board the International Space Station have tasted the product, or produce, of their work. They chomped on the lettuce freshly harvested from the Veggie growth system.
11 August 2015, 12:54 AM ET
The slow death of the universe was revealed in 21 wavelengths, as scientists map the energy of a nearby region of space.
10 August 2015, 01:25 PM ET
The annual Perseid meteor shower will reach its peak this week on Wednesday (Aug. 12) and Thursday (Aug. 13), giving amateur skywatchers an evening show.
06 August 2015, 08:06 AM ET
Orbiting 1 million miles ‘sunward’ of Earth, a four megapixel CCD camera/telescope captured Luna crossing over the Pacific Ocean from the Deep Space Climate Observer’s point of view on July 16th, 2015.
05 August 2015, 11:51 AM ET
Africa looked awash in splotches of dusty pink, vibrant green and a swirl of white clouds in an image snapped Tuesday (Aug. 4) by Europe's newest weather satellite, according to an announcement from the European Space Agency.
05 August 2015, 11:02 AM ET
From the safety of space, NASA observed the most powerful storm of the year.
29 July 2015, 02:07 PM ET
The fiery demise of ancient huts in southern Africa 1,000 years ago left clues to understanding a bizarre weak spot in the Earth's magnetic field — and the role it plays in the magnetic poles' periodic reversals.
29 July 2015, 01:52 PM ET
On Friday, much of the world will have the opportunity to observe a Blue Moon: A somewhat rare occurrence that doesn't have anything to do with the moon's color.
28 July 2015, 11:22 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.
28 July 2015, 08:27 AM ET
The ashy peak of a volcano stands out amid a snowy scene, hinting at a recent eruption, in newly released images from NASA.
25 July 2015, 08:15 AM ET
Dark matter is the mysterious stuff that cosmologists think makes up 85 percent of matter in the universe. A new theory says dark matter might resemble a known particle. If true, it would open up a window onto an invisible, dark matter version of physics.
24 July 2015, 07:22 PM 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.
23 July 2015, 04:17 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.
21 July 2015, 04:25 PM ET
Famed physicist Stephen Hawking helped launch a major new search for intelligent alien life, despite having strong fears that such creatures would destroy humanity.
20 July 2015, 04:14 PM ET
The most far-reaching search for extraterrestrial intelligence (SETI) is now underway: A new $100 million initiative invites the world's top minds to scour the universe for signals from distant planets, scientists announced today (July 20).
20 July 2015, 03:57 PM ET
NASA released today (July 20) the first image of the sunlit side of Earth taken by the Deep Space Climate Observatory (DSCOVR) spacecraft from its final science orbit, and the beautiful photo has already made quite an impact.
17 July 2015, 11:31 PM ET
The engimatic flat region, which researchers have dubbed "Sputnik Planum," is broken into cell-like blocks and harbors mysterious pitted terrain and dark streaks of material that may have been deposited by Plutonian wind.
15 July 2015, 07:05 PM ET
The first close-up photo of Pluto revealed a mountain range rising 11,000 feet (3,500 meters) into Pluto's sky, along with a surface just 100 million years old at the most. A view of the dwarf planet's big moon Charon didn't disappoint, either.
15 July 2015, 01:17 PM ET
This morning, NASA's New Horizons probe will beam home the first haul of photos collected during Tuesday morning's Pluto flyby. NASA plans to unveil some of the best images during a news conference today at 3 p.m. EDT; watch it live on Space.com.
14 July 2015, 10:49 PM ET
NASA's New Horizons spacecraft has sent a status update home to its handlers here on Earth, indicating that the probe survived its historic encounter with Pluto this morning (July 14) — and that reams of amazing data should be on the way soon.
14 July 2015, 08:41 AM ET
New Horizons was 476,000 miles (766,000 kilometers) from the surface of the icy dwarf at 4pm EDT on July 13th, 2015. Closest approach will occur at 7:49am EDT on July 14th.
14 July 2015, 08:26 AM ET
NASA's New Horizons probe flew by Pluto this morning (July 14), capturing history's first up-close looks at the frigid, far-flung world and completing the initial reconnaissance of the solar system (if all went according to plan).
13 July 2015, 05:01 PM ET
Even 4.67 billion miles (7.5 billion km) away from Earth, the New Horizons mission at Pluto could help scientists learn more about planet Earth.
13 July 2015, 01:57 PM ET
Pluto may only be the beginning of NASA New Horizons' exploration of the Edgeworth-Kuiper Belt.
13 July 2015, 01:52 PM ET
Investigation of imagery and other data from the approaching probe reveal Pluto to be larger than previous estimates. Principal investigator Alan Stern explains the implications on ice composition, rock estimates, and atmospheric composition.