Astronaut Scott Kelly: "It's great to be back"
Returns to Houston after 340 days in space, orbiting Earth on the International Space Station
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Returns to Houston after 340 days in space, orbiting Earth on the International Space Station
"A year's a long time," Kelly said, as he and crewmates enjoy fresh air and look forward to family reunions
Kelly and cosmonaut Mikhail Kornienko returned to Earth after 340 days in orbit
Highlights from Astronaut Scott Kelly's 340-day mission in space -- the longest flight ever by an American
Jets of the future could take you anywhere in the world in six hours or less
Aldrin, the second man to walk on the moon, thinks humankind's next giant leap forward is to colonize the Red Planet
As his year in space draws to a close, NASA's endurance champ looks forward to the next milestone
Three of Saturn's dozens of moons are captured above and below the planet's rings
Social media lit up this weekend with a tale seemingly worthy of "The X-Files" - here's what really happened
Despite U.S. cold snap, Earth sets 9th straight monthly heat record
Latest report on this winter's powerful El Niño suggests we'll be seeing some changes soon
New images from inside the command module that landed the first men on the moon
The Smithsonian uncovers new details from inside the first spacecraft to land on the moon
In breakthrough discovery, scientists confirm ripples in space-time created by violent collisions in the universe
NASA weighs in on reports that a meteorite may have killed a bus driver in India
"CBS This Morning" became the first broadcast to look inside the mission that may finally put humans on the Red Planet in the next few decades
We visit NASA's Jet Propulsion Laboratory in Calif. to bring you closer than ever to the building of a spacecraft destined for the Red Planet
Edgar Mitchell, the sixth man to walk on the moon, was an accomplished aviator with a deep interest in psychic phenomena
Powerful navigation satellite will enhance technology for civilians, military and aviation
An asteroid that passed 1.3 million miles away from Earth two years ago is set to return, possibly much closer
Facebook and NASA team up to give Earthlings an interactive, 360-degree look at the landscape of Mars
On January 31, 1961, Ham the chimp rode a Mercury capsule into sub-orbit
Family members, friends and colleagues honor fallen astronauts on 30th anniversary of Challenger disaster
30 years ago, the Challenger exploded shortly after launch, killing all seven crew members - here's how "Face the Nation" covered the tragedy
30 years after Challenger disaster, the first teacher in space is remembered by students who followed in her footsteps