Science Fiction Fantasy Chronicles: forums - View Single Post - Nemesis theory

Survivor · 9th January 2003, 02:56 AM

Wasn't the reason that it was called Nemesis because of the theory that its orbit disrupted comets and sent them into the inner solar system, hence causing periodic mass extinctions on Earth?

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Okay, the Nemesis theory postulates a companion star, a red or perhaps brown dwarf, that comes close enough to the solar system every 26 million years to throw a bunch of comets at us. It doesn't refer to a planet at all. The corresponding theory using a planet is referred to as the "Planet X" theory.

9th January 2003, 02:56 AM	#3 (permalink)
Survivor Senior Member Join Date: Dec 2002 Posts: 188	Re:Nemesis Wasn't the reason that it was called Nemesis because of the theory that its orbit disrupted comets and sent them into the inner solar system, hence causing periodic mass extinctions on Earth? Searching... Okay, the Nemesis theory postulates a companion star, a red or perhaps brown dwarf, that comes close enough to the solar system every 26 million years to throw a bunch of comets at us. It doesn't refer to a planet at all. The corresponding theory using a planet is referred to as the "Planet X" theory.