WASHINGTON -- President Barack Obama will bestow the Medal of Freedom posthumously on Sally Ride, the first American woman to fly in space. Obama say...

CAPE CANAVERAL, Fla. — A 59-year-old Russian cosmonaut became the world's oldest spacewalker Friday, joining a much younger cosmonaut's son for ...

In space, no one can hear you scream -- at least that's how Hollywood promoted the 1979 blockbuster "Alien." But what happens if you cry in space? In ...

By: Mike Wall Published: 11/05/2012 10:11 AM EST on SPACE.com Call it the ultimate absentee ballot. NASA astronauts aboard the International Spa...

"Being in space is really cool." That's not me talking -- the closest I've come to life in zero-G was using the family station wagon for simulated moon missions back in the day. No, that simple assessment comes straight from the mouth of NASA astronaut Sunita L. Williams.

In the history of humankind, only one person has a bio that includes "first on the moon": Neil Armstrong. And was he ever the right person for the job!

On Saturday August 25, 2012, a true American hero lost his life. Neil Armstrong was the first person to bravely leave our world behind and set foot on...

Neil Armstrong represented all that was the ideal in our time. I'll never forget watching those grainy images that night, as Armstrong jumped off the ladder of the lander onto the surface of the moon.

Sally Ride was the first American woman to go to space, blasting off on the Space Shuttle Challenger on June 18, 1983, mere months before I was born. ...

ORLANDO, Fla. -- A former NASA astronaut who commanded space shuttle Discovery's second-to-last mission died after a water scooter crash involving his...

By: Mike Wall Published: 05/14/2012 07:47 AM EDT on SPACE.com Three astronauts are finally ready to blast off toward the International Space Sta...

STAR CITY, Russia — An American astronaut heading to the International Space Station has chosen Smokey Bear as his crew's mascot. NASA astronau...

By: Steve Spaleta, SPACE.com Producer/Editor Published: 03/19/2012 09:45 AM EDT on SPACE.com Canadian astronaut and future space station comma...

By: Tariq Malik Published: 03/07/2012 05:16 PM EST on SPACE.com Apple launched the new iPad today (March 7), but American astronauts on the Inte...

It is time to declare that the goal of the United States in space is the settlement of the solar system, from low Earth orbit to the Moon and Mars.

By: Robert Z. Pearlman Published: 02/25/2012 07:24 AM EST on SPACE.com It took more than 200 astronauts from 12 countries more than a dozen year...

By: Natalie Wolchover Published: 02/22/2012 10:51 AM EST on Lifes Little Mysteries Fires can't burn in the oxygen-free vacuum of space, but guns...

By: Tariq Malik Published: 02/15/2012 07:32 PM EST on SPACE.com This story was updated at 6:42 p.m. ET. A NASA robot built to ease the daily...

WASHINGTON -- The sun is bombarding Earth with radiation from the biggest solar storm in more than six years with more to come from the fast-moving er...

I believe we will go to space because we have to in order to continue our growth as human beings. There is little choice involved.

MIAMI -- The head of NASA met Monday with former astronauts to discuss who owns space artifacts from moon shots and other missions, saying afterward t...

Today I asked questions submitted by you to two astronauts whose answers were by turns insightful, hilarious, and awe-inspiring.

On Friday morning, I have a once-in-a-lifetime opportunity, thanks to our Innovations Editor here at The Huffington Post, Jake Bialer. I'll be sitting...