27 March 2015, 08:00 AM ET
Astronauts today typically spend 6 months in orbit, and a yearlong mission is underway, but Mars missions would take years.
26 March 2015, 05:54 PM ET
An American astronaut and Russian cosmonaut are set to make history as the first crewmembers to spend a year onboard the International Space Station, but the two are not the first to log 12 months off the planet.
26 March 2015, 04:17 PM ET
NASA and Russia are launching a joint one year mission to the International Space Station. NASA's Scott Kelly and cosmonaut Mikhail Kornienko will blast off to the orbiting outpost on March 27, 2015 EDT.
26 March 2015, 02:36 PM ET
Roscosmos' Mikhail Kornienko will spend a year aboard the International Space Station. He talks about his father, a Russian military helicopter pilot that was part of search and rescue teams for the country's first cosmonauts.
26 March 2015, 09:36 AM ET
The Asteroid Redirect Mission (ARM) will employ two vehicles. A robot will capture a boulder from an asteroid and a manned Orion spacecraft mission will rendezvous with it to return samples.
26 March 2015, 08:01 AM ET
NASA has a lot of questions about what happens to people who live in space for long periods of time, and it's almost time to get some answers.
26 March 2015, 08:00 AM ET
An astronaut and a cosmonaut spend an entire year aboard the ISS to provide data on the health implications of space travel.
26 March 2015, 07:00 AM ET
The National Space Biomedical Research Institute Industry Forum has funded three companies as part of its "Vision for Mars" challenge, which seeks to mitigate the visual problems astronauts experience during long-term spaceflight.
25 March 2015, 04:37 PM ET
NASA will pluck a boulder off a large asteroid and return it to lunar orbit, rather than target an entire near-Earth object for relocation, agency officials announced today (March 25).
25 March 2015, 04:22 PM ET
Scott Kelly's name tags were intended to be on the space station by now. The two blue and gold badges were among the items that NASA had arranged to send to the orbiting outpost ahead of Kelly launching on a yearlong expedition.
25 March 2015, 03:47 PM ET
Human bodies change on long-duration missions. NASA's Scott Kelly and Roscomos' Mikhail Kornienko will spend a year aboard the ISS to understand how to better keep future crews healthy.
25 March 2015, 08:05 AM ET
The private spaceflight company posted a photo of a SpaceX sign at Florida's Cape Canaveral Air Force Station that reads "Landing Complex 1," and also released images of a Dragon cargo vessel about to leave SpaceX headquarters on Feb. 23.
25 March 2015, 07:58 AM ET
Science experiments conducted on the International Space Station during the orbiting outpost's first yearlong mission could help open the door to deep space for NASA.
24 March 2015, 01:00 PM ET
An American astronaut is about to embark on the mother of all space missions. NASA's Scott Kelly is getting ready to fly up to the International Space Station Friday (March 27) for a yearlong mission that will test his endurance like never before.
24 March 2015, 01:00 PM ET
Neptune's moon Triton has some unique properties among the moons of the solar system, which could make it an interesting location for a space colony.
24 March 2015, 11:00 AM ET
The International Space Station now plays host to an experiment that could help scientists unlock the mysteries of Alzheimer's disease.
23 March 2015, 05:52 PM ET
Retro art by the French artist Invader has turned up on the International Space Station and European Space Agency ground installations. See photos of the Space Invaders-inspired artwork on Earth and in space.
23 March 2015, 03:48 PM ET
NASA's Scott Kelly and cosmonaut Mikhail Kornienko will kick off the first yearlong International Space Station mission when they launch to the orbiting outpost on March 27, 2015.
23 March 2015, 02:03 PM ET
Just about two hours into Gemini 3, NASA's first two-man spaceflight 50 years ago, John Young reached into his spacesuit's pocket and pulled out a surprise. "Where did that come from?" replied Gus Grissom, Gemini 3 commander.
23 March 2015, 07:35 AM ET
What do actor Ed Harris, comic strip beagle Snoopy, astronaut Jack Swigert, and James Bond have in common? A new chronograph celebrating the 'successful failure' of Apollo 13 45 years ago.
23 March 2015, 07:00 AM ET
An American astronaut and two cosmonauts are set to fly up to the International Space Station Friday (March 27), and two of those crewmembers won't be back on Earth for about a year on a mission that aims to help open the doorway to deep space for Earthli
21 March 2015, 04:00 PM ET
From St. Patrick's day in space to a spectacular solar eclipse, don't miss these amazing space images of the week for March 21, 2015.
20 March 2015, 12:00 PM ET
Astronauts hoping to sip drinks in style may soon have a cocktail glass concept to look forward to. The Zero Gravity Cocktail Project is aiming to create an open-top glass that can be used in microgravity, using an innovative "groove system" that would ke
20 March 2015, 11:30 AM ET
Astronauts on the International Space Station caught sight of an amazing solar eclipse today (March 20), and they have the photos to prove it.
19 March 2015, 06:36 PM ET
The delay was necessitated by a lack of investment funding, which has slowed work on a robotic precursor mission that Mars One had wanted to send toward the Red Planet in 2018, Mars One CEO Bas Lansdorp said in a new video that posted March 19.
19 March 2015, 07:00 AM ET
NASA officials viewed Bigelow Aerospace's Bigelow Expandable Activity Module (BEAM) at the company's facility in Las Vegas on March 12. BEAM is scheduled toward the International Space Station atop SpaceX's Falcon 9 booster later this year.
18 March 2015, 05:12 PM ET
18 March 2015, 05:08 PM ET
Virgin Galactic opened its latest commercial spaceflight facility this month to build a new rocket capable of launching small satellites into orbit.
18 March 2015, 03:50 PM ET
An Antarctic crew plans to simulate spaceflight during the long, cold winter to better understand how humans adapt to space.
18 March 2015, 12:45 PM ET
It lasted just 12 minutes and 9 seconds, but the first spacewalk — 50 years ago — took the first steps towards shaping the future of space exploration. Soviet cosmonaut Alexei Leonov became the first person to leave his craft.
18 March 2015, 07:00 AM ET
Sierra Nevada Corp. today (March 17) unveiled the autonomous cargo version of its Dream Chaser space plane, which the company hopes NASA chooses to fly the next round of cargo missions to the orbiting lab.
17 March 2015, 10:00 PM ET
For about 50 years, humanity has sent orbiters, probes and landers to the Red Planet. Here's a look at all of the missions to Mars to date, both the successes and the failures.