A while back, in another thread (which I can't find), somebody posted a link to
this article.
quote:
Astronomer Darren Williams and his colleagues at Pennsylvania State University at Erie have been studying elliptical orbits recently, and they think life on Earth can withstand a lot more tumult than scientists previously guessed. They have been running sophisticated computer models of planets in orbits of varying eccentricity circling suns of various sizes. "High eccentricity does not critically compromise planetary habitability," Williams says. Then he drops the astrobiology lingo and translates with a boyish smile: "These planets will still support life."
It seems that earth isn't so "special" after all. There really isn't anything to "explain".
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