Tuesday, June 2, 2009

Good news!

Maybe we don't have to move the Earth outward to compensate for the brightening of the Sun. Without this effect, we would have to move the Earth or take other steps to avoid runaway greenhouse effect like on Venus. As a rough approximation, if this is true, over the last 500 million years, the Earth has moved outward about 75,000 km?

http://www.newscientist.com/article/dn17228-why-is-the-earth-moving-away-from-the-sun.html

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