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.
10 March 2015, 11:12 AM ET
Spirit and Opportunity, the Mars rovers, have outlived and outlasted any spacecraft on the surface of the red planet. Take a look at some of their latest Mars photos.
10 March 2015, 08:30 AM ET
If a robot plunges into the ocean of an icy moon, perhaps near Saturn or Jupiter, its main problem will be figuring out what to do next. Even at light speed, it takes hours for communications to pass back and forth to Earth.
09 March 2015, 05:52 PM ET
The new Space Launch System booster may look similar to the Space Shuttle boosters but its design has been overhauled for efficiency. NASA and the booster manufacturer ATK Space Systems explain.
08 March 2015, 12:48 PM ET
A powerful camera spotted a comet and scientists captured images of a supernova four different times. Here are Space.com's pics for the top space stories of the week.
07 March 2015, 02:34 PM ET
From an amazing photo of Comet Lovejoy captured by a dark energy camera to Comet 67P/Churyumov-Gerasimenko, don't miss these amazing space images of the week for March 7, 2015.
06 March 2015, 05:20 PM ET
In a blast from the space-age past, the National Archives released an awesomely retro 1965 advertisement for NASA's traveling outreach program, the Spacemobile.
05 March 2015, 05:30 PM ET
See amazing images of the night sky and cosmos in SPACE.com's gallery of cosmic images posted in February 2015.
04 March 2015, 07:00 AM ET
The Dawn mission's unprecedented deep-space feats are enabled by the probe's innovative propulsion system, which is about 10 times more efficient than traditional chemical thrusters, NASA officials say.
03 March 2015, 04:24 PM ET
Tech giant Google will give $1 million to Lick Observatory, a University of California, Berkeley facility that has been battling for funds since 2013, the observatory announced today (Feb. 10).
01 March 2015, 12:41 PM ET
Astronomers discovered the most gigantic black hole yet known and Leonard Nimoy — Mr. Spock from the beloved "Star Trek" series — passed away at the age of 83. Here are Space.com's pics for the top space stories of the week.
28 February 2015, 03:32 PM ET
From a record-setting parafoil flight to a newly-tested space plane, don't miss these amazing space images of the week for March 1, 2015.
27 February 2015, 04:00 PM ET
A recently launched NASA satellite has just deployed its giant antenna in preparation to collect unprecedented data about soil moisture around the world.
26 February 2015, 05:12 PM ET
NASA's Soil Moisture Active Passive mission team deployed its spacecraft's large antenna on Feb. 24th, 2015. The mission will track and map soil moisture on Earth.
26 February 2015, 02:25 PM ET
The Aragoscope would consist of an orbiting space telescope sitting behind an opaque disc up to 0.5 miles (0.8 kilometers) wide. This disc would be made of a black plastic material, similar to a garbage bag.
23 February 2015, 10:55 AM ET
An art exhibit at the Cooper Hewitt Smithsonian Design Museum in New York City bring together tools from throughout human history: from ancient artifacts to cutting edge instruments for space exploration.
23 February 2015, 07:30 AM ET
With one reportedly flawless test flight already under its belt, officials are already planning a European space plane for its next test.
21 February 2015, 04:46 PM ET
Europe's last cargo spacecraft came down to Earth in a fiery blaze and scientists reported seeing mysterious plumes emanating from Mars. Here are Space.com's picks for the best space stories of the week.
20 February 2015, 11:33 AM ET
Orbital ATK, builders of the Space Shuttle Solid Rocket Motors and of the future Space Launch System, describe the avionics system for their March 2015 static-fire test of the booster in Promontory, Utah.
19 February 2015, 09:50 AM ET
The world's biggest and most powerful particle smasher is gearing up for hunt for new particles, including mysterious dark matter and clues for supersymmetry.
18 February 2015, 12:04 PM ET
A robotic submarine could explore the methane seas on Titan, Saturn's largest moon. See how space technology and NASA are working to make this a reality.
18 February 2015, 06:30 AM ET
Bantam spacecraft should survive for about 15 minutes in Jupiter's thick air before bursting into flame, according to researchers developing a concept mission called SMARA (SMAll Reconnaissance of Atmospheres).
15 February 2015, 09:23 AM ET
Europe launched a prototype minishuttle on its first space test, SpaceX lofted the DSCOVR space-weather satellite, and scientists questioned whether dark matter is truly "dark." Here are Space.com's picks for the best space stories of the week.
14 February 2015, 12:40 PM ET
From a colorful cosmic "flower" to a smiley face in space, don't miss these amazing space images of the week for Feb. 15, 2015.
12 February 2015, 06:03 PM ET
The moon is home to liquid methane seas. In an animation developed for the NASA's Innovative Advanced Concepts (NIAC) program, a submersible is used to study the shoreline and liquid methane depths.
11 February 2015, 02:48 PM ET
Rough seas have scuttled SpaceX's plan to land the first stage of its Falcon 9 rocket on a robotic drone ship in the Atlantic Ocean after today's launch of the DSCOVR space-weather satellite.
11 February 2015, 10:30 AM ET
The European Space Agency's car-size Intermediate eXperimental Vehicle (IXV) blasted off from French Guiana at 8:40 a.m. EST Wednesday. The craft came screaming back to Earth 100 minutes later.
10 February 2015, 07:00 AM ET
DARPA aims to begin the flight-test phase of its Airborne Launch Assist Space Access program, or ALASA, with a demonstration run in late 2015. If all goes according to plan, a series of 12 orbital flights would then commence in early 2016.
10 February 2015, 07:00 AM ET
SpaceX aims to launch the DSCOVR space weather satellite, land the first stage of its Falcon 9 rocket in a reusability test and bring its Dragon cargo capsule safely down to Earth, all in the span of a few hours.
09 February 2015, 03:51 PM ET
The unmanned space plane, called the Intermediate eXperimental Vehicle (IXV), is slated to blast off Wednesday at 8 a.m. EST from French Guiana. Its 100-minute suborbital flight is designed to test out re-entry technologies.
09 February 2015, 10:35 AM ET
The launch of a new satellite designed to monitor space weather has been delayed another day.
08 February 2015, 02:32 AM ET
The private spaceflight company SpaceX will attempt the ultimate space double-header today (Feb. 8) with the launch of a space weather observatory followed by an ambitious rocket landing attempt on a floating platform in the Atlantic Ocean.