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Red Dwarfs: The Most Common and Longest-Lived Stars
December 21, 2016 | ReferenceMost of the star nearest to Earth are red dwarfs, but they are too dim to be seen with the naked eye.
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NASA's Jet Propulsion Laboratory (JPL): Facts & Information
December 21, 2016 | ReferenceJPL is the space agency's go-to center for the robotic exploration of worlds beyond Earth.
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2017 Moon Phases Calendar
December 20, 2016 | ReferenceFind out the current moon phases. The moon cycles through eight phases every month.
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Lunokhod 1: 1st Successful Lunar Rover
December 19, 2016 | ReferenceLunokhod 1 was the first successful rover to explore another world. Driven by remote-control operators in the Soviet Union, it travelled more than 10 kilometers (6 miles) in just 10 months.
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Ranger 7: First U.S. Close-Ups of the Moon
December 15, 2016 | ReferenceRanger 7 was the first American spacecraft to image the moon's surface from close-up. Those pictures helped set the stage for later manned landings.
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How Did Neptune Form?
December 14, 2016 | ReferenceThe gas giant formed out of the dust cloud known as the solar nebula.
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How Did Uranus Form?
December 13, 2016 | ReferenceLight elements clumped together to form the gas giants.
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Geminid Meteor Shower: Dust From an Asteroid
December 07, 2016 | ReferenceThe Geminids come from an asteroid, 3200 Phaethon, but scientists are still trying to figure out exactly how it sheds enough debris to produce the bright meteor shower.
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Grace Hopper: 'First Lady of Software'
December 01, 2016 | ReferenceGrace Hopper's work with computers helped NASA communicate with Apollo astronauts, and still helps scientists keep track of far-flung spacecraft.
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Planet Mercury: Facts About the Planet Closest to the Sun
November 30, 2016 | ReferenceMercury is the smallest planet in our solar system and is known for its short years, long days, extreme temperatures and weird sunsets.
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