Astronomers Find 7 Potentially Habitable Planets

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Explaining The Sizzling Sound Of Meteors

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Mae Jemison addresses congressional representatives and distinguished guests at Bayer's Making Science Make Sense 20th anniversary celebration in 2015. Kevin Wolf/AP Images for Bayer Making Science Make Sense hide caption

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Kevin Wolf/AP Images for Bayer Making Science Make Sense

After Making History In Space, Mae Jemison Works To Prime Future Scientists

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This artist's rendering shows what one of the seven planets, TRAPPIST-1f, might look like. NASA/JPL-Caltech hide caption

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NASA/JPL-Caltech

Astronomers Find 7 Earth-Size Planets Around A Nearby Star

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The Apollo 11 command module Columbia sits in the Mary Baker Engen Restoration Hangar in Virginia, where it is undergoing conservation. Dane Penland/National Air and Space Museum/Smithsonian Institution hide caption

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Dane Penland/National Air and Space Museum/Smithsonian Institution

This is what failed to happen on Wednesday morning. In this image from April 17, 2015, a robotic arm on the International Space Station grasps a SpaceX Dragon cargo ship during docking. NASA/AP hide caption

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NASA/AP

SpaceX's Falcon 9 rocket sits on the launch pad Saturday at Kennedy Space Center in Florida. SpaceX scrubbed the Saturday launch due to a technical issue. The company is tried again — and succeeded — on Sunday. Bruce Weaver/AFP/Getty Images hide caption

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Bruce Weaver/AFP/Getty Images

Why NASA Is Exploring An Alien World In Antarctica

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An artist's concept shows the WISE spacecraft in its orbit around Earth. NASA/JPL-Caltech hide caption

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NASA/JPL-Caltech

Have Spare Time? Try To Discover A Planet

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SpaceX's Falcon 9 rocket is prepared Friday for a launch at the Kennedy Space Center in Florida. Launch Pad 39A, one of the renovated space shuttle launch pads that SpaceX leases from NASA, has been the site of many of NASA's most famous liftoffs. Bruce Weaver/AFP/Getty Images hide caption

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Bruce Weaver/AFP/Getty Images

This image made by the NASA/ESA Hubble Space Telescope shows part of a group of five galaxies known as Stephan's Quintet. NASA, ESA, Hubble SM4 ERO Team /AP hide caption

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NASA, ESA, Hubble SM4 ERO Team /AP

'Are We Alone?' Churchill Concludes It's Likely Life Circles Other Suns

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