14 April 2014, 12:01 AM ET
NASA scientists found faint signatures of water in the atmospheres of five distant planets orbiting three different stars, as illustrated in this space wallpaper. All five planets appear to be hazy.
12 April 2014, 02:12 AM ET
On Tuesday (April 15), Space.com will premiere a new documentary "LIGO, A Passion for Understanding" by filmmaker Kai Staats, which follows scientists using the Laser Interferometer Gravitational-wave Observatories (LIGO) to hunt for gravitational waves.
11 April 2014, 02:42 PM ET
A robotic humanoid astronaut on the International Space Station is about to get its legs. NASA has crafted a pair of space legs for its robotic astronaut torso called Robonaut 2 on the space station now.
11 April 2014, 02:17 PM ET
Astrophotographer Steve Zigler created this image of Zodiacal light in Death Valley, California. See how he did it here.
11 April 2014, 01:58 PM ET
Avid night sky photographer captures a stunning look at famed Orion Nebula using portable photography gear for the first time. See how he did it.
10 April 2014, 10:32 PM ET
NASA's Interface Region Imaging Spectrometer, or IRIS, has revealed fine detail in prominences within the sun's atmosphere (the red swirls shown in this space wallpaper), challenging the way scientists understand such events.
10 April 2014, 10:26 PM ET
A team of researchers detected a pair of faraway objects that could be a free-floating Jupiter-like gas giant and its moon or a small star hosting a planet about 18 times more massive than Earth. The duo's identity will likely never be known.
10 April 2014, 09:55 PM ET
The northern lights, captured over the snow of Maine.
10 April 2014, 03:49 PM ET
Researchers employ supercomputers to understand and predict black holes swallowing stars.
08 April 2014, 11:09 PM ET
Though UFO enthusiasts may beg to differ, mission team members say that a bright flash of light visible in two images taken by the Curiosity rover on April 2 and April 3 almost certainly has a perfectly ordinary explanation.
08 April 2014, 10:59 PM ET
This colorful space wallpaper from NASA's Cassini mission is the highest-resolution view of the unique six-sided jet stream at Saturn's north pole known as "the hexagon." Image obtained on Dec. 10, 2012 and released Dec. 4, 2013.
08 April 2014, 06:55 PM ET
A new documentary trailer making its way around the Internet this week seems to make the case for a long-outdated theory about how the universe works.
07 April 2014, 06:54 PM ET
To survive on Mars, astronauts may need to rely on an usual diet.
04 April 2014, 09:48 PM ET
The dusty surface of small asteroids is born by extreme temperature shifts between periods of sunlight and darkness, a cycle of drastic changes that break up space rocks over time, scientists say.
04 April 2014, 09:32 PM ET
Enceladus' ocean is about 6 miles deep and lies beneath a shell of ice 19 to 25 miles thick. Further, it's in direct contact with a rocky seafloor, theoretically making possible all kinds of complex chemical reactions.
02 April 2014, 11:53 PM ET
This space wallpaper is an Envisat radar image acquired over the city of Boca do Acre in western Brazil. The city lies within Amazonas state, the largest Brazilian state by area, and almost completely covered by the Amazon Rainforest.
02 April 2014, 10:30 PM ET
Scientists have pinned down the birth date of the moon to within 100 million years of the birth of the solar system — the best timeline yet for the evolution of our planet's natural satellite.
02 April 2014, 10:16 PM ET
An observatory in Chile has caught sight of a cosmic killer: a galaxy that has destroyed at least one of its galactic neighbors.
02 April 2014, 10:09 PM ET
Strange stripelike features in Earth's magnetic field are caused by the planet's spin, and not by the constant bombardment of solar particles as previously thought, scientists say.
02 April 2014, 04:03 AM ET
The story behind a well-known image of the 1987 occultation of Venus by the moon.
02 April 2014, 02:27 AM ET
To express the motions of the universe, sometimes it helps to express the motions of modern dance.
01 April 2014, 11:49 PM ET
This space wallpaper by NASA's Kepler spacecraft shows the telescope's full field of view taken in a new demonstration mode in late October.
01 April 2014, 07:06 PM ET
Add the Monastery at Petra to the monuments that humans likely built for astronomical purposes. New research suggests that ancient architects tracked the motion of the sun and constructed the religious center with the winter solstice in mind.
01 April 2014, 06:48 PM ET
Scientists analyzed a 13th-century Latin text, applying modern mathematics to it, and found hints that the English medieval philosopher who wrote it in 1225 was already toying with concepts similar to the modern cosmological idea of a multiverse.
01 April 2014, 12:21 AM ET
This cluster of stars seen in this space wallpaper is known as Messier 15. It is located some 35,000 light-years away in the constellation of Pegasus (The Winged Horse).
29 March 2014, 03:12 AM ET
The technology to make lunar missions routine is on the horizon, says Astrobotic CEO John Thornton.
29 March 2014, 12:06 AM ET
After initial water escaped into space, the rest froze.
28 March 2014, 11:26 AM ET
When a small NASA-funded rocket launched off planet Earth this month in a dazzling liftoff, it wasn't headed for the final frontier. Instead, the rocket had a closer target: the northern lights dancing over Alaska.
28 March 2014, 10:12 AM ET
A new Hubble image, captured on March 11, shows what appear to be two jets of dust coming off the nucleus of Comet Siding Spring, which on Oct. 19 will miss Mars by just 84,000 miles — about one-third the distance between Earth and the moon.
28 March 2014, 09:59 AM ET
The Large Magellanic Cloud is one of the closest galaxies to our own. Astronomers have used ESO’s Very Large Telescope to explore NGC 2035, one of its lesser known regions, in great detail as seen in this stunning space wallpaper.
28 March 2014, 04:07 AM ET
For rocket engineer Edward Miyashiro, inspiration came from the space race and a curious mind — but do U.S. students have the inspiration to eventually take his place?
27 March 2014, 09:42 AM ET
The mysterious dark energy that's driving the universe's accelerated expansion may have its roots in the background "vacuum energy" that pervades all of the cosmos, a new study suggests.