17 March 2015, 07:01 AM ET
Titania and Miranda offer up great views and places to explore, but both of the moons suffer from extreme cold and very low gravity.
16 March 2015, 04:52 PM ET
Titania, an airless moon of Uranus, is cold and its day is 84 years long. See what it would be like for astronauts on Titania in this Space.com infographic.
16 March 2015, 04:29 PM ET
The strange mystery of the giant "Y" seen in the skies of Venus for more than 50 years may be solved at last: This colossal oddity may be caused by a new kind of wave in the solar system, scientists have found.
16 March 2015, 04:18 PM ET
The composition of newfound features on the surface of Mercury, identified by new maps of the planet, suggest that the exposed mantle created the features.
15 March 2015, 11:29 AM ET
NASA launched a new space-weather mission and scientists found evidence of a hydrothermal system on Saturn's ocean-bearing moon Enceladus. Here's a look at Space.com's top stories of the week.
14 March 2015, 12:32 PM ET
From a monster solar flare to a spectacular night launch, don't miss these amazing space images of the week for March 15, 2015.
13 March 2015, 12:52 PM ET
In honor of the Pi Day of the century, 3.1415 (March 4, 2015), NASA’s Jet Propulsion Laboratory has created a dizzying math challenge. Hint: every solution will use the mathematical constant pi
13 March 2015, 12:30 PM ET
An Earth-size alien waterworld tilted on its side may still be able to support life, if the oceans aren't too shallow, a new study suggests. Oceans are the key to keeping the climate stable enough on highly oblique worlds.
13 March 2015, 07:00 AM ET
In an unlikely scenario, the impacts that created the craters that became Canada's two Clearwater Lakes apparently occurred almost 200 million years apart.
13 March 2015, 07:00 AM ET
Curiosity transferred powdered rock sample from its robotic arm to an analytical instrument on its body on Wednesday (March 11), and then drove about 33 feet (10 meters) toward the southwest on Thursday (March 12), NASA officials said.
13 March 2015, 12:30 AM ET
An Atlas V rocket lit up the night sky over Florida, like a larger-than-life roman candle, at 10:44 p.m. EDT on March 12 (0244 GMT March 13). The rocket carried a scientific experiment that will study an explosive phenomenon taking place in Earth's magnet
12 March 2015, 11:00 PM ET
NASA will launch a new group of satellites to study the phenomenon of magnetic reconnection.
12 March 2015, 05:36 PM ET
Titan is probably the least inhospitable place in the outer solar system, but remember to bring oxygen and warm clothing.
12 March 2015, 04:47 PM ET
The first human-made spacecraft to soft-land on the surface of a comet might be waking up soon.
12 March 2015, 02:27 PM ET
oday (March 12) at 10:44 p.m. EDT (0244 GMT March 13), an Atlas V rocket will take off from Cape Canaveral. Photographers looking to get the perfect shot of the rocket taking off have built MacGyver-style devices to protect their cameras.
12 March 2015, 01:50 PM ET
Ganymede, Jupiter's largest moon, has a vast underground ocean of salty water, NASA scientists announced Thursday (March 12). The ocean on Ganymede was discovered with the Hubble Space Telescope.
12 March 2015, 12:37 PM ET
After the latest from BICEP2 and Planck, does cosmic inflation still hold up?
12 March 2015, 09:23 AM ET
The last Apollo mission launched by NASA was Apollo 17, in 1972 — but an art exhibit called "Apollo XVIII" is launching from Times Square all this month.
12 March 2015, 07:57 AM ET
NASA's Magnetospheric Multiscale mission, which will send four satellites on a search for explosive magnetic reconnections in Earth's magnetic field, will launch tonight at 10:44 p.m. EDT (0244 GMT). Here's how to watch live.
12 March 2015, 07:33 AM ET
New Horizons, which will zoom through the Pluto system on July 14, fired its engines for 93 seconds on Tuesday (March 10), when it was about 3 billion miles from Earth — the most distant engine burn ever, mission officials said.
12 March 2015, 07:02 AM ET
Traditional spacecraft-sterilization techniques can get rid of most microbes. But a new method is emerging that might be able to take all of them out, even the hardiest of the hardy.
11 March 2015, 03:26 PM ET
Star clusters, emission nebulae and active star-forming regions, Oh My! A new detailed look at the southern constellation of Ara (The Altar) shows open star cluster NGC 6193, hot giant stars, the Rim Nebula and more.
11 March 2015, 03:18 PM ET
Sunspot AR2297 was crackling with M and C class flares before the magnetic energy finally gave way to the x-flare on Mar. 11th, 2015. "Its causing HF radio blackouts, primarily over the Americas," according to Spaceweather.com.
11 March 2015, 02:57 PM ET
The X-class flare, the most powerful type, peaked at 12:22 p.m. EDT (1622 GMT) today, causing radio blackouts over wide stretches of Earth.
11 March 2015, 02:01 PM ET
Hot springs on Saturn's moon Enceladus suggest ocean depths reaching at least near-boiling temperatures may lie deep beneath its icy crust, researchers say.
11 March 2015, 07:03 AM ET
NASA will test-fire the booster of its Space Launch System (SLS) megarocket today at 11:30 a.m. EDT, and three astronauts will return to Earth from the International Space Station in the evening. Watch all the action live here at Space.com.
11 March 2015, 07:01 AM ET
An extravaganza of stars, colorful clouds of gas and dust, and the emerging pillar of a cosmic nebula are all packed together in the same space neighborhood, which is shown in an impressive new image.
11 March 2015, 07:00 AM ET
The Magnetospheric Multiscale mission, which will study a cosmic phenomenon that is both dazzling and dangerous for people on Earth, is scheduled to launch into orbit on Thursday (March 12).
11 March 2015, 07:00 AM ET
The site lies at about 4 degrees north latitude and 136 degrees east longitude. It's the leading candidate for NASA's InSight lander, which is scheduled to launch in March 2016 and touch down on Mars in late September of that year.
10 March 2015, 05:23 PM ET
NASA is counting down to launch four small satellites into orbit on Thursday (March 12) on a mission to study an explosive cosmic phenomenon happening right on Earth's doorstep.
10 March 2015, 05:01 PM ET
Titan is one of the most habitable places for humans in the solar system, while Enceladus is one of the best places to look for life.
10 March 2015, 04:14 PM ET
What powers solar flares, auroras and other big zaps of plasma? NASA's Magnetospheric Multiscale (MMS) mission will study "magnetic reconnection" in the cosmos.