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.
12 February 2015, 12:07 PM ET
The U.S. Astronaut Hall of Fame will honor four space shuttle astronauts this spring as it marks 25 years since its founding. Rhea Seddon, John Grunsfeld, Steve Lindsey and Kent Rominger will be enshrined on May 30 at the Kennedy Space Center in Florida.
11 February 2015, 11:11 AM ET
The Smithsonian's National Air and Space Museum in Washington, D.C., has launched a new exhibit to chronicle the history of spacewalking. See photos here from the Outside the Spacecraft: 50 Years of Extra-Vehicular Activity exhibit at the Smithsonian.
10 February 2015, 07:50 PM ET
The Dragon spacecraft splashed down Tuesday (Feb. 10) at 7:44 p.m. EST in the Pacific Ocean off the coast of Baja California. The unmanned capsule had departed from the space station about 5 1/2 hours earlier, at 2:10 p.m. EST.
10 February 2015, 02:35 PM ET
SpaceX's robotic Dragon capsule is on its way back to Earth after spending one month attached to the International Space Station, marking the start of a big day for the private spaceflight company.
09 February 2015, 04:00 PM ET
ESA's tiny suborbital testbed vehicle could pave the way for later orbital space planes.
09 February 2015, 07:09 AM ET
Neil Armstrong had a secret stash of moon landing mementos. The first man to walk on the moon kept a bag full of small parts from the lunar module that he and his Apollo 11 crewmate Buzz Aldrin famously piloted to a landing at Tranquility Base in 1969.
06 February 2015, 08:44 PM ET
The icy moon Europa is perhaps the most tantalising destination in our solar system.
06 February 2015, 03:53 PM ET
Move over astronaut freeze-dried ice cream, Russian space food tubes have arrived. The All-Russian Exhibition Center in Moscow is now selling authentic cosmonaut food to the public through a new vending machine.
06 February 2015, 07:00 AM ET
All seven crewmembers, who will spend two weeks at the Mars Desert Research Station near the Utah town of Hanksville, are astronaut candidates for Mars One's Red Planet colonization effort.
05 February 2015, 01:08 PM ET
One of the final remaining structures unique to supporting NASA's space shuttle program is no more. The Mate-Demate Device at the Kennedy Space Center in Florida, which mounted and removed the orbiters from the back of jumbo jets for 35 years, has been de
02 February 2015, 04:20 PM ET
The White House is requesting a $500 million boost for the NASA budget in 2016, potentially propelling the space agency on its way toward sending humans to Mars in the future, the agency's chief said Monday.
01 February 2015, 07:00 AM ET
'Shoot For the Moon' is a short film depicting a homeless astronaut as he sets out for the moon – armed with nothing more than a travel case, some bottle rockets, but carrying a cargo of ambition.
30 January 2015, 02:00 PM ET
Two American spaceflight companies are quietly competing in a space race for the new era. SpaceX and Boeing are vying to become the first private firms to fly astronauts to the International Space Station for NASA sometime in 2017.
30 January 2015, 10:20 AM ET
If you have ever desired to take a "space walk," Adidas has the sneakers for you. The German shoe outfitter is set to launch two new pairs of sports trainers featuring the look and feel of NASA's historic spacesuits.
28 January 2015, 04:40 PM ET
On Jan. 22, operators on the ground used two robotic arms to install NASA's Cloud Aerosol Transport System (CATS) instrument on the exterior of the International Space Station.
28 January 2015, 02:50 PM ET
NASA astronaut Terry Virts, a member of the current Expedition 42 crew aboard the International Space Station, captured several dramatic photos of the monster winter storm Tuesday night, as it wheeled and churned over New England.
28 January 2015, 07:00 AM ET
NASA officials are conducting ceremonies at several different sites around the country to pay tribute to the astronauts killed in 1967's Apollo 1 fire and the Challenger and Columbia space shuttle accidents.
27 January 2015, 12:06 PM ET
NASA cannot put astronauts on Mars in the 2030s under current funding, experts interviewed for an unreleased movie say.
27 January 2015, 07:35 AM ET
The Planetary Society's first LightSail spacecraft will blast off in May from Florida's Cape Canaveral Air Force Station, to test out critical systems and technologies ahead of a more involved orbital trial in 2016.