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What Will the Moon Do Next?
Use a simple trick to discover what phase the moon is in.
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Weird Lightning
What causes red sprites and blue jets?
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Dr. Shannon Lucid
Dr. Shannon Lucid dreamed of being a pioneer, and her dreams came true!
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Apollo’s Moon Rocks
Rocks brought back to Earth by astronauts of the Apollo program give clues about the Moon's violent beginning.
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New Worlds
Scientists have been searching for signs of life on other planets. Have they finally found a clue?
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Ocean on Europa, An
Evidence of water on one of Jupiter's moons could lead to the discovery of new life forms.
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Milky Way, Our Home, The
How do scientists know that our galaxy is a pinwheel of stars?
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Stars in Weird Orbits
What would it be like to live in a world with two suns?
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Merry Christmas from the Moon!
On December 24, 1968, the crew of Apollo 8 gave an unforgettable present to the people of Earth.
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The Summer Triangle
Following these easy directions, find picture-stars in the summer sky.
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Hubble Opens Our Eyes
Since 1993, the Hubble Space Telescope has sent home amazing pictures of far-off galaxies, newly created stars, and beautifully colored nebulae.
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Chandra
Subrahmanyan Chandrasekhar formulated the theory of black holes.
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Hunting for Black Holes
Astronomers try to unravel a mystery.
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Catch a Shooting Star
What are Perseids, and why is August 12 the best night to see them?
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Driving on Mars
Brian Cooper explores Mars from Earth using a remote control robot.
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Zoo in the Sky
Astronomers have discovered nebulae that look like familiar animals.
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