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News From the Field

Unseen Planet Revealed by Its Gravity


May 10, 2012

heliosphere as it moved through interstellar space More than 150 years ago, before Neptune was ever sighted in the night sky, French mathematician Urbain Le Verrier predicted the planet's existence based on small deviations in the motion of Uranus. In a paper published today in the journal Science online, a group of researchers led by David Nesvorny of Southwest Research Institute has inferred another unseen planet, this time orbiting a distant star, marking the first success of this technique outside the solar system. Full Story

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Southwest Research Institute

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