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Ask an Astrobiologist has received more than 2500 questions about Nibiru and 2012, with more than 200 answers posted. Please read a summary of the answers that have already been posted, view a video on these topics, use the search feature and read the FAQ’s before submitting questions on these topics.
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Question
Is it possible that Pluto will ever collide with Neptune because their orbits appear to cross? If so, what will happen?
No, the orbits of Pluto and Neptune are gravitationally linked so that they can never come close to each other. This is called a resonance, with the orbital period of Pluto (248 years) exactly 3/2 times the orbital period of Neptune (163 years). Several other outer solar system objects (called Kuiper Belt objects or KBOs) are also in resonant orbits coupled to Neptune.
David Morrison
NAI Senior Scientist
September 19, 2008
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