19 December 2013, 03:45 PM ET
Astronauts preparing to spacewalk outside the International Space Station are outfitting their spacesuits with an unusual device: a makeshift snorkel.
Primary Section: spaceflight
19 December 2013, 02:15 PM ET
A new way to weigh the mass of distant alien worlds could help reveal key details about how friendly they may be to life, researchers say.
19 December 2013, 09:44 AM ET
An astronaut and a cosmonaut shake hands during the STS-71 mission.
19 December 2013, 07:00 AM ET
The Mars One colonization mission plans to bring live video of the surface of Mars to Earth via a privately built communications satellite and lander to launch as part of an unmanned mission in 2018.
18 December 2013, 06:50 PM ET
Repairing a problem with the International Space Station's vital cooling system will require at least two if not three spacewalks, NASA officials said today (Dec. 18). The spacewalks are scheduled for Dec. 21, 23 and 25.
18 December 2013, 06:50 PM ET
Lead U.S. Spacewalk Officer Allison Bolinger explains what the ISS astronauts will be doing over 3 spacewalks to repair cooling system. A pump module needs to be replaced.
18 December 2013, 01:24 PM ET
Had the momentum of the 1960s been maintained over the next 40 years, there would be footprints on Mars by now. But after Apollo, the political impetus for manned spaceflight was lost.
18 December 2013, 12:33 PM ET
An astronaut prepares for STS-38 by training underwater for EVAs.
17 December 2013, 07:06 PM ET
NASA has decided that three spacewalks — one each on Dec. 21, 23 and 25 — will be necessary to replace a faulty pump module on the station. As a result, the planned launch of the unmanned Cygnus spacecraft will occur in mid-January at the earliest.
17 December 2013, 10:06 AM ET
Astronaut Rick Mastracchio just might find himself spacewalking in a weightless wonderland this winter to make repairs on the International Space Station, and he says he's ready for the job.
17 December 2013, 09:46 AM ET
Astronaut Jerry Ross approaches the Assembly Concept for Construction of Erectable Space Structures device.
16 December 2013, 03:35 PM ET
NASA engineers are trying to fix a problem with the International Space Station's cooling system in time for a private robotic spaceship to launch on a cargo mission to the orbiting lab on Thursday (Dec. 19).
16 December 2013, 01:27 PM ET
Space Station Malfunction: Fixes Discussed By NASA | Video
ISS Mission Operations Integration Manager Kenny Todd gives an update on the Space Station cooling issue that occurred aboard the International Space Station in Dec. 2013.
16 December 2013, 12:00 PM ET
See photos from Iran's space rocket launches, including the country's first monkey spaceflight.
15 December 2013, 04:18 PM ET
What was your favorite space news story of the last week?
15 December 2013, 02:54 PM ET
From amazing photos of the “Jade Rabbit” rover basking in Lunar Bay of Rainbows to stunning images of the Geminid meteor shower, don't miss these amazing space images of the week for Dec. 15, 2013.
15 December 2013, 07:42 AM ET
See the latest on China's space program, rocket launches and space missions.
13 December 2013, 05:43 PM ET
NASA selected SpaceX (Space Exploration Technologies) to lease a historic launch pad to support the private spaceflight company's rockets.
13 December 2013, 11:20 AM ET
Astronauts have beamed down their views of the Earth from the International Space Station for years, but a new video shows their unique sights in a new light.
13 December 2013, 11:07 AM ET
In the latest episode of NASA's 'Space To Ground', host Josh Byerly talks about the cooling system failure and the orbital sciences' cargo delivery. Also, in station science: circadian rhythms, and the impact on human eyes while living in space.
13 December 2013, 10:15 AM ET
ISS crew member Rick Mastracchio gives an update on the cooling system failure that occurred on Dec. 12, 2013 and the possible spacewalk to repair. Also, he answers SPACE.com reader questions and talks Christmas.
12 December 2013, 02:10 PM ET
Veteran NASA astronaut Rick Mastracchio is hard at work on the International Space Station, but on Friday (Dec. 13), he will speak with SPACE.com about life in orbit and we want to hear your questions.
12 December 2013, 01:58 PM ET
A modified version of the orange Advanced Crew Escape System (ACES) suits worn during launch and re-entry of Space Shuttle flights was tested at the Neutral Buoyancy Laboratory (NBL) near NASA's Johnson Space Center in Houston.
12 December 2013, 01:14 PM ET
The malfunction of a vital cooling system on the International Space Station could delay plans to launch a privately built cargo ship on its first official delivery mission to the orbiting lab next week, NASA officials said today (Dec. 12).
12 December 2013, 01:14 PM ET
ISS Mission Operations Integration Manager Kenny Todd explains what happened with the station's cooling loop on Dec 12, 2013 and the efforts to fix the problem. The ISS crew is not in danger but an Orbital Science's cargo delivery may be delayed.
12 December 2013, 12:45 PM ET
Astronaut Edward White II floats in the zero gravity of space.
12 December 2013, 11:30 AM ET
Commercial U.S. space company Orbital Sciences Corp. is set to send its second unmanned freighter the International Space Station next week. Weather permitting, the rocket launch should be visible for many skywatchers along the East Coast.
11 December 2013, 09:23 PM ET
The International Space Station suffered a problem with half of its vital cooling system Wednesday (Dec. 11), resulting in a partial power down of some non-critical systems, NASA officials say.
11 December 2013, 05:51 PM ET
Virgin Galactic's private SpaceShipTwo space plane built to fly space tourists on suborbital thrill rides successfully flew its latest glide test over the California desert today (Dec. 11). The flight tested a new coating to the spacecraft's twin tail boo
11 December 2013, 04:07 PM ET
Come along for the ride as SPACE.com's @MiriKramer flies with fmr. Air Force pilot Russell Campell aboard a Marchetti SF260. 10 seconds of weightlessness into a 4G turn, Cuban 8 maneuver and more..she even gets to fly the plane!
11 December 2013, 10:03 AM ET
Astronaut Edwin E. Aldrin, Jr. stands next to a solar wind experiment during the Apollo 11 EVA.
10 December 2013, 05:23 PM ET
Mars One, the nonprofit foundation that plans to send astronauts on a one-way trip to Mars, has secured suppliers for its first mission to the Red Planet. The foundation has picked Lockheed Martin to design its unmanned vehicles.