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Interactive: Mars exploration from Viking to MAVEN

updated 1:56 PM EST, Mon November 18, 2013

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Space
updated 3:29 PM EDT, Sat September 20, 2014
This image from the Hubble Space Telescope indicates that a huge ring of dark matter likely exists surrounding the center of CL0024+17 that has no normal matter counterpart.
Scientists are closer to seeing a vast, invisible universe as a spectrometer in Earth orbit picks up possible clues of dark matter.
updated 9:21 AM EDT, Wed September 10, 2014
The Soviets sent stray dogs up to conquer space. This is what happened next
updated 5:20 AM EDT, Thu August 28, 2014
Scientists believe that a hot gas bubble was formed by multiple supernovas.
updated 11:47 AM EDT, Wed August 27, 2014
Robonaut is the next generation dexterous robot
Life aboard the International Space Station.
updated 9:53 PM EDT, Tue August 26, 2014
NASA's New Horizons mission hurtles toward Pluto in historic 3 billion mile expedition.
updated 4:44 PM EDT, Wed August 6, 2014
Rosetta spacecraft arrives at its destination, Comet 67P after a 10-year journey around the solar system.
After a 10-year chase the Rosetta spacecraft is now orbiting a comet
updated 4:16 PM EDT, Fri July 25, 2014
"Here comes the sun" indeed, and it was just barely all right.
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
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.
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."
updated 3:43 PM EDT, Mon August 25, 2014
solar flare july 2014
From Earth, the sun appears as a constant circle of light, but when viewed in space a brilliant display of motion is revealed.
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.
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.
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.
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.
updated 7:03 PM EDT, Tue June 10, 2014
The sun is putting on a fireworks show again.
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.
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.
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.
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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