07 October 2015, 05:56 PM ET
A United Launch Alliance Atlas V rocket is scheduled to launch the NROL-55 mission for the National Reconnaissance Office at 8:49 a.m. EDT (1249 GMT) Thursday, along with 13 tag-along cubesats. Watch it live here at Space.com, beginning at 8:29 a.m. ET.
07 October 2015, 05:51 PM ET
A strong geomagnetic storm is amplifying the Earth's northern lights tonight (Oct. 7), making auroras potentially visible as far south as Pennsylvania, Oregon and Iowa, space weather experts say.
07 October 2015, 05:11 PM ET
Mars has water trapped in the polar ice caps. More water may lie just beneath the surface. A new study suggests that water also flows on the surface.
07 October 2015, 01:00 PM ET
Just 32 light-years from us, a star called AU Microscopii violently flares much more strongly than our Sun. The Hubble Space Telescope and Very Large Telescope have now picked up 5 distinct arches in the flattened cloud of gas.
07 October 2015, 01:00 PM ET
Scientists were looking for planets forming in the large disk of dust surrounding a young star when they encountered a surprise: fast-moving, wavelike arches racing across the disk like ripples in water.
07 October 2015, 11:57 AM ET
Last week, astronomers, astrophysicists, data scientists and programmers came together at New York University to try to solve some of astronomy's toughest problems — in just five days.
06 October 2015, 04:22 PM ET
Earlier this month, the ExoMars launch date was pushed back by a couple of months. Instead of launching in January 2016, the European mission will launch the following March — but still get to Mars at nearly the same time. How is this possible?
06 October 2015, 12:25 PM ET
If you're stranded, would you rather be on the moon or Mars?
06 October 2015, 10:42 AM ET
Using stereo image data from ESA's Mars Express, German Aerospace Center (DLR) scientists created this highly accurate view of the terrain fictional astronaut Mark Watney"(played by Matt Damon) would of had to traverse to find his way home.
06 October 2015, 08:12 AM ET
Why do pulsars, one of the universe's most reliable clocks, occasionally speed up? A new theory suggests there's a perfectly flowing fluid at the heart of this mystery.
06 October 2015, 08:00 AM ET
NASA's Mars Reconnaissance Orbiter has photographed a plain called Acidalia Planitia and the southwest corner of the 285-mile-wide Schiaparelli Crater, the landing sites of the Ares 3 and Ares 4 missions, respectively, in the "The Martian
05 October 2015, 05:28 PM ET
A Martian atmosphere thick enough to allow constantly flowing water may have been lost to space rather than trapped by surface rocks, according to a recent study.
04 October 2015, 09:29 AM ET
The Slooh Community Observatory will host a free webcast tonight, Oct. 4, to discuss the new film "The Martian" and Mars exploration. You can watch it live here at 7 p.m. ET, courtesy of Slooh.
03 October 2015, 09:59 AM ET
There's water on Mars, a resupply spaceship at the International Space Station, a science-heavy survival novel on the big screen and something moving inside Saturn. These are our best space stories of the week.
03 October 2015, 07:30 AM ET
For a long five and a half years, Comet 67P's southern side has been shrouded by darkness. Now, it's coming into the light, and new microwave images, taken before the big reveal, suggest that the comet's "dark side" may have a very unusual composition.
03 October 2015, 07:00 AM ET
Slowly but surely, Curiosity is making its way up the mountain, and the new photo — which was taken on Sept. 9 but just released Friday (Oct. 2) — shows some of the terrain the robot will investigate in the future.
03 October 2015, 12:13 AM ET
Hurricane Joaquin, a Category 4 storm that is currently battering the central Bahamas, appears to be replacing its eye, according to weather forecasters.
02 October 2015, 08:54 PM ET
From the discovery of water on Mars to stunning reader images of the Supermoon eclipse, don't miss these amazing space images.
02 October 2015, 07:50 AM ET
A planet with liquid water on the surface and titanium oxide deposited by meteors could produce oxygen in the atmosphere without the need for life.
02 October 2015, 07:50 AM ET
In honor of Oktoberfest, we taste-tested beer made from moon dust and space yeast. Plus, we made suggestions for space-themed beers.
01 October 2015, 06:10 PM ET
As Hurricane Joaquin barrels across the Atlantic Ocean, NASA satellites are tracking the storm to determine how it will affect residents along the East Coast of the United States.
01 October 2015, 05:36 PM ET
The storm, which was upgraded to Category 4 on Oct. 1st, 2015, was captured by the NOAA Goes-East satellite. Images from September 29th to October 1st have been compiled and looped.
01 October 2015, 04:29 PM ET
The new photos were captured by NASA's New Horizons spacecraft during its historic flyby of Pluto on July 14. Mission team members combined some of the images into a new video that lets viewers fly over Charon's tortured surface.
01 October 2015, 02:24 PM ET
New Horizon’s fresh hi-res multispectral images of the smaller body of this double dwarf planet reveal a tortured world of craters and crunched terrain.
01 October 2015, 01:16 PM ET
See amazing images of the night sky and cosmos in Space.com's gallery of cosmic images posted in September 2015.
01 October 2015, 12:44 PM ET
NASA's Global Precipitation Measurement captured data on the storm on Sept. 29th, 2014. Its showed a large of the hurricane dumping 2 to 5 inches of rain (shown in red and magenta) into the Atlantic ocean.
01 October 2015, 09:56 AM ET
Hubble Space Telescope observations of the Neptune-sized planet GJ 436b show that its extremely close host star is boiling the planet’s atmosphere away, leaving an Earth-sized rocky core, much like ‘our’ Neptune.
01 October 2015, 07:09 AM ET
Scientists are testing a new microphone technology called the remote acoustic sensor (RAS), which is capable of capturing sounds within extreme and often inaccessible aerospace environments.
01 October 2015, 07:00 AM ET
NASA has chosen five finalists for the next launch opportunity in its Discovery Program, which funds low-cost missions to destinations throughout the solar system. Two of the proposals are focused on Venus, while the other three center on asteroids.
30 September 2015, 06:01 PM ET
See photos and images of Ceres, a dwarf planet and the largest asteroid in the solar system yet known. Ceres is round and may contain more fresh water than the entire Earth. NASA's Dawn spacecraft will explore Ceres in 2015.
30 September 2015, 04:11 PM ET
The new maps from NASA's Dawn mission highlight the compositional and topographic differences across Ceres, the largest object in the main asteroid belt between Mars and Jupiter.
30 September 2015, 03:20 PM ET
Are you ready for Mars? NASA is working to get the agency ready for a human mission to the Red Planet in a few decades, and is showcasing its personnel and projects online.
30 September 2015, 11:56 AM ET
The dusty-red sphere now called Mars has fascinated stargazers since the dawn of humanity, but Earthlings' view of the planet has changed drastically over the years.
29 September 2015, 03:49 PM ET
India’s PSLV rocket on Sept. 28 placed the nation’s first astronomy satellite into a near-equatorial low Earth orbit along with six secondary payloads that included satellites owned by prospective competitors in commercial maritime surveillance.
29 September 2015, 03:39 PM ET
The Art of Ed Belbruno: Exclusive Space.com Event
29 September 2015, 02:31 PM ET
The Google Doodle for today (Sept. 29) features an adorable custom video that celebrates the recent discovery of liquid water on the surface of Mars.