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January 20, 2016 06:00 pm
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/vRTXaM-sWjk/caltech-astronomers-say-a-ninth-planet-lurks-beyond-pluto
Caltech Astronomers Say a Ninth Planet Lurks Beyond Pluto
sciencehabit writes: The solar system may have a new ninth planet. Today, two scientists announced evidence that a body nearly the size of Neptune — but as yet unseen — orbits the sun every 15,000 years. During the solar system's infancy 4.5 billion years ago, they say, the giant planet was knocked out of the planet-forming region near the sun. Slowed down by gas, the planet settled into a distant elliptical orbit, where it still lurks today.Here's a link to the full academic paper published in The Astronomical Journal.Read more of this story at Slashdot.
Original Link: http://rss.slashdot.org/~r/Slashdot/slashdot/~3/vRTXaM-sWjk/caltech-astronomers-say-a-ninth-planet-lurks-beyond-pluto
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