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Carregando... Nemesisde Richard A. Muller
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The U. Cal Berkeley physics professor recounts the genesis, discovery, and aftermath of his theory that a killer star--Nemesis--is orbiting the sun, barraging the earth every 26 million years with a cataclysmic shower of comets. Não foram encontradas descrições de bibliotecas. |
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Since it has been 40 years since I read this, I don't recall the details of Muller's argument. He is not mentioned in that Wikipedia article.
Muller's primary data rested on periodic extinctions every 26 million years presumably from a non-terrestrial source such as the disturbance of comets in the Oort cloud. His proposed villain was a distant dim dwarf star companion to the Sun. Most stars in the night sky are binaries.
Latest observations and calculations cast doubt on both that extinction cycle and the existence of a companion star.
https://en.wikipedia.org/wiki/Nemesis_(hypothetical_star)
But the search for long-period planets goes on. (