11 March 2015, 12:33 PM ET
The world's largest solid rocket motor roared to life in Utah, but rather than lifting off the ground, the booster, laying on its side, was restrained in place as data was collected to qualify it for NASA's Space Launch System.
11 March 2015, 11:00 AM ET
NASA's new rocket, the Space Launch System, represents the most powerful rocket ever built. The rocket's booster fired in a test on March 11, 2015, in Utah.
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, 04:00 AM ET
A look at some of the records people have set during spaceflight.
10 March 2015, 03:10 PM ET
Sarah Brightman will be 'chasing dreams' and 'shaping futures' when she launches on a self-funded trip to the International Space Station in September, the soprano said as she revealed her personal mission patch at a press conference in London.
10 March 2015, 12:13 PM ET
Lawmakers in New Mexico are considering a bill to sell Spaceport America, a commercial space launch site that will be the home port for Virgin Galactic SpaceShipTwo spaceliner flights.
10 March 2015, 11:45 AM ET
'Houston, we've had a problem.' That's among the hundred-plus NASA audio files from historic spaceflights, current missions and even sounds of the future, sounds that you can easily download to your phone.
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.
10 March 2015, 08:00 AM ET
When the world's largest solid rocket motor is ignited in Utah, it won't leave the ground, but it will fire with components that have a long spaceflight history.
09 March 2015, 11:00 PM ET
Apollo 9 lunar module pilot Rusty Schweickart had just exited his vehicle when command module pilot Dave Scott told him to hang on. Schweickart got five minutes of peace and introspection while Scott tried to fix a jammed camera.
09 March 2015, 05:33 PM ET
Astronauts on the International Space Station are about a third of the way through filming scenes for a new IMAX documentary to be released in late spring 2016, the film's director revealed in a new interview.
03 March 2015, 03:11 PM ET
When U.S. astronauts next launch to space from Florida, the control team that oversees their liftoff may celebrate with the traditional crock of beans. If so, they'll be honoring the legacy of test director Norm Carlson, too.
03 March 2015, 11:24 AM ET
Our civilization—and presumably any civilization with a technological capacity at least as advanced as ours—runs on energy and raw materials.
02 March 2015, 05:19 PM ET
F. Curt Michel, an astrophysicist who was among NASA's first scientist-astronauts but who resigned after it became clear he would not fly to the moon, died Feb. 23, 2015. He was 80.
02 March 2015, 07:00 AM ET
Russia says it will support U.S. plans to keep the International Space Station operating through 2024, but then wants to split off three still-to-be launched modules to form a new orbital outpost.
01 March 2015, 02:46 PM ET
The International Space Station is now three steps, or rather spacewalks, closer to being ready for the arrival of new U.S. commercial crewed spacecraft with the completion of a trio of two-astronaut excursions.
26 February 2015, 01:38 PM ET
Going to Mars without setting up a colony — round-trip manned missions, in other words — would not be enough for the U.S. to reclaim its leadership in space, nor would setting up human outposts on the moon, Aldrin said.
26 February 2015, 08:08 AM ET
With an eye towards the future, NASA has marked the first 50 years of its two rocket-moving crawler-transporters by taking one of the newly-upgraded massive machines out for a test drive to the launch pad.
26 February 2015, 08:00 AM ET
Soviet-era cosmonaut Alexei Gubarev, who trained to fly to the moon but instead led the first multi-national space station crew, died on Feb. 21. He was 83. Gubarev logged 37 days in orbit during the Soyuz 17 and Soyuz 28 missions.
25 February 2015, 03:40 PM ET
An American astronaut found water inside his spacesuit helmet at the end of an otherwise flawless spacewalk outside the International Space Station today (Feb. 25), but he was never in any danger, NASA officials say.
24 February 2015, 05:00 PM ET
Low temperatures, gravity and sunlight would define the experience of living on Ceres, the largest asteroid belt object.
24 February 2015, 07:00 AM ET
International Space Station Commander Butch Wilmore took a photo of himself Saturday (Feb. 21) that captured a gloriously blue, cloud-studded ocean in the background. Fellow spacewalker Terry Virts is reflected in Wilmore's visor.
23 February 2015, 04:35 PM ET
Boeing and the United Launch Alliance are building a new astronaut access tower for Atlas rocket launches of future space taxis for NASA. See how it works.
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.
21 February 2015, 11:29 AM ET
A company that aims to send tourists to the edge of space in a balloon broke a record today, flying a parafoil higher than anyone has before.
20 February 2015, 01:44 PM ET
See photos from astronaut Samantha Cristoforetti's on a mission at the International Space Station.
20 February 2015, 12:50 PM ET
A space fan crafted a model of the International Space Station made from 280,000 matchsticks. Check it out here.
20 February 2015, 11:55 AM ET
NASA this week begins work to reassemble parts of the International Space Station to create parking spots for two commercial space taxis.
17 February 2015, 04:00 PM ET
Life on Mars would be full of chilly weather, large dust storms and geological sights dwarfing anything on Earth.
17 February 2015, 03:02 PM ET
Russia's unmanned Progress 58 spacecraft docked today to the Zvezda service module at 11:57 a.m. EST, delivering 3 tons of food, fuel, experimental hardware and other gear to the six crewmembers aboard the station.
17 February 2015, 01:45 PM ET
Students in the New York City public school system are currently competing for the chance to put a science experiment on the International Space Station, thanks to a new program at the Intrepid Sea, Air and Space Museum in New York.
16 February 2015, 02:28 PM ET
Mars One, which aims to land four pioneers on the Red Planet in 2025 as the vanguard of a permanent colony, has whittled its pool of astronaut candidates down to 100, organization representatives announced Monday.
15 February 2015, 02:37 PM ET
In the end, ESA's final space station cargo freighter went out in a fiery blaze rather than the "big bang" of its namesake. The ATV-5, christened the "Georges Lemaître" after the Belgian astronomer, plunged into the Earth's atmosphere and was destroyed.
14 February 2015, 11:00 AM ET
The unmanned ATV-5, named "Georges Lemaitre," departed at 8:42 a.m. EST Saturday (Feb. 14), ending its six-month stay at the orbiting lab. ATV-5 will come back to Earth Sunday afternoon (Feb. 15), in a closely monitored, fatal dive.
12 February 2015, 06:00 PM ET
NASA is a high-tech space agency but even astronauts and engineers need to cut loose with some wild mission posters. Take a look at some of the wildest mission posters by NASA astronauts and their crewmates in this gallery.
12 February 2015, 05:18 PM ET
That's no Star Wars poster. It's a space station … crew. NASA revealed the official poster for the International Space Station's Expedition 45 crew and let's just say, the Force is strong with them.