03 August 2015, 10:17 AM ET
Enormous stars collapse in ultramassive supernova explosions — now in 3D! For the first time ever, researchers have turned back the clock on a star's final moments to simulate how wrinkles in its violent collapse trigger a vast explosion.
03 August 2015, 07:00 AM ET
Climate modelers go back in time to simulate past Snowball Earth conditions and find that complete freeze-over is hard to achieve.
03 August 2015, 06:59 AM ET
Astronomers from all over the world are gathering in Honolulu, Hawaii, to discuss the most cutting edge space science around. Members of the public can join the scientists for talks and stargazing events.
03 August 2015, 06:38 AM ET
Signs life on planets outside our solar system could be found in exoplanet atmospheres, but possible "false positives" are making scientists cautious.
02 August 2015, 02:18 PM ET
An alien aurora 1 million times brighter than Earth's, robots building a moon telescope, a $5.5 billion asteroid and more in Space.com's top news stories of the week.
02 August 2015, 09:30 AM ET
It's a tech geek's dream in the underwater lab hosting four "aquanauts" for 14 days this month. Among the crew's need-to-have items is a cutting-edge Microsoft virtual-reality headset that one day will go to space itself.
01 August 2015, 10:00 AM ET
The second full moon of July brought a stunning Blue Moon to skywatchers around the world on July 31, wowing them with a spectacular lunar sight. See their photos and reactions here.
01 August 2015, 07:14 AM ET
The second full moon of July 2015, a so-called Blue Moon, wowed stargazers around the world on July 31, 2015. See their amazing photos in our gallery here.
31 July 2015, 06:55 PM ET
From an amazing view of Africa from space to a tint galaxy bursting with stars, don't miss these stunning space images.
31 July 2015, 06:00 PM ET
Could we actually be living in the Matrix? You might be surprised.
31 July 2015, 05:19 PM ET
A 16-year-old New York City-area student will one day see her DNA experiment launched to the International Space Station. The experiment was designed by Anna-Sophia Boguraev of Bedford, New York.
31 July 2015, 03:25 PM ET
Asteroid 1999 JD6's nearest approach to Earth was ~4.5 millions miles away but it was close enough for radar images to be captured. The object is a "contact binary consisting of two lobes," according to NASA's Jet Propulsion Laboratory.
31 July 2015, 03:10 PM ET
The ashy peak of a volcano stands out amid a snowy scene, hinting at a recent eruption, in newly released images from NASA.
31 July 2015, 03:01 PM ET
See what's up in the night sky for August 2015, including stargazing events and the moon's phases, in this Space.com gallery courtesy of Starry Night Software.
31 July 2015, 02:17 PM ET
NASA has a new launch pad for small rockets, and it's open for business to companies hoping to send light satellites into the final frontier.
31 July 2015, 12:30 PM ET
In a coincidence of cosmic proportions, the second full moon of July rises tonight, making it a so-called "Blue Moon" — and Blue Moon Brewing Co. will celebrate its 20th anniversary by painting the town red.
31 July 2015, 09:34 AM ET
Planet HD 219134b was detected using NASA's Spitzer Space Telescope. It resides 21 light-years away in the Cassiopeia constellation and its star is visible from Earth. The planet orbits too close to its star to support life.
31 July 2015, 08:51 AM ET
Russia has formally notified its International Space Station partners that it will continue in the partnership at least to 2024, ending several months of doubts that were fueled by the current poor state of Russia’s relations with the West.
31 July 2015, 08:45 AM ET
XCOR Aerospace, a company developing a two-seat suborbital spaceplane for tourism and research applications, plans to raise its ticket prices by 50 percent next year, the company announced July 16.
31 July 2015, 08:40 AM ET
For the next six months, NASA's Saturn-orbiting Cassini spacecraft will get its final look at two icy moons -- one famous and one not so well-known -- before preparing for mission's end in 2017.
31 July 2015, 07:00 AM ET
NASA's Hubble Space Telescope and the Keck Observatory in Hawaii have helped researchers characterize a Uranus-mass exoplanet that had remained mysterious since its discovery a decade ago.
31 July 2015, 06:00 AM ET
There's a "Blue Moon" in the sky today, but it won't look different than other full moons. The term blue moon has come to refer to the second full moon in a given month.
31 July 2015, 06:00 AM ET
Time magazine's "Year in Space" documentary offers an inside look into the 12-month stint Scott Kelly is spending aboard the International Space Station and also delves into his life as an astronaut.
31 July 2015, 06:00 AM ET
Scientists with the SETI (Search for Extraterrestrial Intelligence) Institute have already begun targeting Earth's older cousin, Kepler 452b, the first near-Earth sized world found in the habitable zone of a sun-like star.
31 July 2015, 12:20 AM ET
Earth's magnetic field, which protects the planet from harmful blasts of solar radiation, is much older than scientists had previously thought, researchers say.
30 July 2015, 08:04 PM ET
Engineers at NASA's Kennedy Space Center are developing the Extreme Access Flyer system, an airborne robotic vehicle similar to quad-copters. It’s mission would be to retrieve samples that might otherwise be inaccessible and to map terrain.
30 July 2015, 06:15 PM ET
The alien planet, called HD 219134b, is about 4.5 times more massive than Earth, making it a so-called "super Earth." HD 219134b lies extremely close to its host star, completing one orbit every three days, so its surface is too hot to harbor life.
30 July 2015, 05:25 PM ET
A wisp of a galaxy is rich with new, blue-white young stars and primordial gas in this new cosmic photo from the Hubble Space Telescope. The irregular dwarf galaxy is creating stars the size of our sun at a prodigious rate of about once a year.
30 July 2015, 05:24 PM ET
This month the European Space Agency took a major step closer to an ambitious exploration of Jupiter and its icy moons.
30 July 2015, 04:06 PM ET
This gorgeous satellite view of the busy Big Apple as seen from orbit offers a glimpse into the new 'My Planet From Space' exhibit currently underway at the United Nations.
30 July 2015, 03:35 PM ET
Despite its tranquil-sounding name, new imagery from the Hubble Space Telescope reveals a dusty nebula shaped by "intense winds from hot stars, churning funnels of gas, and energetic star formation.” It is located in the Sagittarius constellation.
30 July 2015, 02:01 PM ET
The structure, composition and evolutionary history of comets are starting to come into focus, thanks to observations beamed home by the European Space Agency's Philae lander, the first probe ever to touch down on one of these icy objects.