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Interactive: Mars exploration from Viking to MAVEN
updated 1:56 PM EST, Mon November 18, 2013
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Dark matter? A vast, invisible universe
updated 3:29 PM EDT, Sat September 20, 2014
Scientists are closer to seeing a vast, invisible universe as a spectrometer in Earth orbit picks up possible clues of dark matter.
Stray dogs in space?
updated 9:21 AM EDT, Wed September 10, 2014
The Soviets sent stray dogs up to conquer space. This is what happened next
Solar system inside gas bubble
updated 5:20 AM EDT, Thu August 28, 2014
Scientists believe that a hot gas bubble was formed by multiple supernovas.
R2D2 gets job on space station
updated 11:47 AM EDT, Wed August 27, 2014
Life aboard the International Space Station.
Probe en route to Pluto
updated 9:53 PM EDT, Tue August 26, 2014
NASA's New Horizons mission hurtles toward Pluto in historic 3 billion mile expedition.
Rosetta first to orbit comet
updated 4:44 PM EDT, Wed August 6, 2014
After a 10-year chase the Rosetta spacecraft is now orbiting a comet
Massive solar storm barely missed us in 2012
updated 4:16 PM EDT, Fri July 25, 2014
"Here comes the sun" indeed, and it was just barely all right.
New space threat has NASA over the moon
updated 12:53 PM EDT, Wed July 23, 2014
Seems NASA's fascination with the moon is in the past. It's focused on something far more menacing: incoming asteroids
Scientists: We're 'very close' to finding another Earth
updated 11:56 PM EDT, Mon July 14, 2014
Scientists looking for signs of life in the universe -- as well as another planet like our own -- are a lot closer to their goal than people realize.
U.S. reveals secret plans for '60s moon base
updated 3:39 PM EDT, Mon August 25, 2014
The U.S. Army brainchild "Project Horizon" was born. Its proposal to leap beyond the Soviets opened with the line: "There is a requirement for a manned military outpost on the moon."
Space weather: Fine, with a chance of solar flares
updated 3:43 PM EDT, Mon August 25, 2014
From Earth, the sun appears as a constant circle of light, but when viewed in space a brilliant display of motion is revealed.
The summer of supermoons is here
updated 1:31 PM EDT, Thu July 17, 2014
The full moons of this summer -- July 12, August 10 and September 9 -- are supermoons, as NASA calls them.
NASA tests flying saucer craft
updated 11:51 AM EDT, Sun June 29, 2014
If you think you saw a flying saucer over Hawaii, you might not be crazy -- except what you saw didn't come from outer space, though that may be its ultimate destination.
NASA's deep-space craft ready
updated 9:47 PM EDT, Thu June 26, 2014
The U.S. space shuttle program retired in 2011, leaving American astronauts to hitchhike into orbit. But after three long years, NASA's successor is almost ready to make an entrance.
Inside a passenger spaceship
updated 10:21 AM EDT, Fri June 13, 2014
When I first poked my head inside Virgin Galactic's newest spaceship, I felt a little like I was getting a front-row seat to space history.
NASA cameras capture huge solar flares
updated 7:03 PM EDT, Tue June 10, 2014
The sun is putting on a fireworks show again.
What has the Mars rover been up to?
updated 7:02 PM EDT, Tue June 24, 2014
A year is a very long time on Mars -- 687 days. NASA's Curiosity rover can attest that it's enough time for some unexpected life changes.
This may support life on Jupiter's moon Ganymede
updated 2:00 PM EDT, Fri May 2, 2014
At least one corner of the solar system may be serving up an ice-and-water sandwich, with the possibility of life on the rocks.
How quickly is the universe expanding?
updated 11:55 AM EDT, Tue April 8, 2014
You can't see it happening on Earth, but space itself is stretching. Ever since the Big Bang happened 13.8 billion years ago, the universe has been getting bigger.
This is the oldest piece of Earth
updated 3:27 PM EST, Tue February 25, 2014
From a sheep ranch in Western Australia comes the oldest slice of Earth we know.
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