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NASA finds tiniest galaxy has 'supermassive' black hole

The agency's Hubble Space Telescope spots one of the smallest galaxies ever discovered -- with a giant black hole at its core.

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Jeff Bezos' Blue Origin to make rocket engine for Boeing, Lockheed Martin

Amazon CEO's aerospace company enters into a partnership with the United Launch Alliance to develop BE-4, a rocket engine to replace Russian-made launch jets.

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NASA taps SpaceX, Boeing to carry astronauts to space

In the return of human space flight for the US, NASA awards both private aerospace companies a combined total of $6.8 billion.

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Own a piece of space history.

Buy a spare Mars Viking lander project rocket engine

Get a head start on building your very own 1970s-style Mars orbiter by snapping up an engine built for NASA's Viking project.

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Curiosity took this selfie to celebrate its first year on Mars.

Curiosity rover to take up mountain climbing on Mars

After two years of exploration and driving, NASA's Curiosity rover has finally reached the base of Mount Sharp, a major goal of the mission.

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What Earth looks like from space in 4K

European astronaut Alexander Gerst is aboard the International Space Station equipped with a camera capable of recording in 4K. This beautiful video captures Earth's majesty in Ultra HD.

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This crater appeared over the weekend after a big boom.

Earth-buzzing asteroid may have dropped meteorite on Nicaragua

Daredevil asteroid 2014 RC slid by close to Earth Sunday, but it may have left a parting gift in the form of a meteorite crater in Nicaragua.

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Andrew Johnstone gave this ring -- complete with an actual piece of the moon -- to his new bride, Jeri Schneider.

Diamonds? Nah. Burning Man wedding ring holds a piece of the moon

This wedding will be remembered for many things, but mostly because the new bride got a 3D-printed ring with an ultra-rare, honest-to-goodness lunar rock.

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The 3D printer during assembly at Made in Space.

NASA flying first zero-gravity 3D printer into space

Printers in space! Astronauts on the space station may not have to wait for the next resupply mission if they can print out needed parts right onboard.

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Peek-a-boo! Astronomers spot 'T-Rex' of galaxies

By using the world's preeminent telescopes, astronomers peer behind a curtain of dust to find a giant star-making factory known as "Sparky."

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An artist's representation of NASA's Mars rover.

Mars rover to get a long-distance memory wipe and reformat

NASA aims to correct a series of problems with the Opportunity rover's memory by giving it a reformat from far, far away.

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Four potential landing sites are marked in this image.

Landing on a comet is hard: Rosetta searches for the sweet spot

The Rosetta mission has narrowed down the selection of possible landing sites to just five candidates, but it's going to be tricky to touch down.

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