22 April 2014, 03:00 PM ET
Between 2000 and 2013, 26 explosions ranging from 1-600 kilotons have been detected by the Nuclear Test Ban Treaty Organization's network of sensors. The bomb that decimated Hiroshima had an energy equivalent of 15 kilotons.
19 April 2014, 09:54 PM ET
Astrophysicists are getting to the depth of dark matter.
18 April 2014, 02:01 PM ET
The space agency's Lunar Atmosphere and Dust Environment Explorer spacecraft (LADEE) made its planned crash into the lunar surface between 12:30 a.m. EDT (0430 GMT) and 1:22 a.m. EDT (0522 GMT) on April 18 after orbiting the moon since October 2.
17 April 2014, 05:09 PM ET
Scientists have discovered Kepler-186f, the first Earth-size alien planet in the habitable zone of its host star. The so-called 'Earth cousin' just might have liquid water and the right conditions to support life.
17 April 2014, 02:43 PM ET
Planet-hunters have new evidence of a planet, about 1.1x Earth’s size, in orbit around another star. Kepler 186f, the outermost world of a 5-planet system, revolves about 3x closer to its star than Earth does to our Sun. More--> http://goo.gl/1fUS
16 April 2014, 06:53 PM ET
A distant group of hot, young stars cause a cloud of hydrogen gas to glow a rosy red 7,300 light-years from Earth in the latest amazing view from a telescope in Chile.
16 April 2014, 01:30 PM ET
Despite frozen shutters and cracking film, Victor Rogus captured the 2000 lunar eclipse.
16 April 2014, 12:49 PM ET
Filmmaker Kai Staats joins leading researchers from the LIGO team to share the motivations behind "LIGO: A Passion for Understanding."
15 April 2014, 11:12 PM ET
Photographs taken by NASA's Cassini probe in April 2013 show a bright arc about 750 miles long and 6 miles wide at the edge of Saturn's outermost ring. This arc was probably created by the gravity of a small, icy object nearby — possibly a newborn moon.
15 April 2014, 11:13 AM ET
The moon took on an eerie blood-red hue early Tuesday during the first total lunar eclipse of 2014, a celestial sight that wowed potentially millions of stargazers across North and South America. See photos of the amazing total lunar eclipse here.
14 April 2014, 10:14 PM ET
This beautiful space wallpaper is a composite image combining a new infrared view of the Crab Nebula, obtained with ESA’s Herschel Space Observatory, with an optical image from the archives of the NASA/ESA Hubble Space Telescope.
14 April 2014, 10:08 PM ET
A powerful scientific tool set to come online in 2015 could help scientists spot gravitational waves, ripples in space-time born from violent cosmic crashes light-years from Earth.
14 April 2014, 02:56 PM ET
A popular televangelist from San Antonio named John Hagee has stated that the four lunar eclipses scheduled to begin this month — also known as "blood moons" — are a sign that biblical prophecies are about to come true.
14 April 2014, 02:12 PM ET
The first total lunar eclipse of 2014 will occur overnight tonight, marking the start of an eclipse tetrad — four back-to-back total lunar eclipses — that will happen over the next 18 months.
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.