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by fr33lunch 531 days ago · link
Good read. Learned some new things, and unlearned some misconceptions.
by mk 531 days ago · link
Thanks. One thing I forgot about was the eccentricity of Mar's orbit. A 30% increase in atmospheric pressure is pretty significant. That would have huge consequences regarding terraforming of Mars.
Also I have to wonder, as the continents were closer to Pangea arrangement, was the Northern/Southern ratio of land to water significantly different? And if so, did it have an effect upon the global temperature? If the North had more water area, the Earth would have absorbed more heat in a given year.
by b_b 531 days ago · link
Yes. It had a huge effect on global temperatures. I think the effect was mostly from the giant landmass itself, however, and not any kind of hemispheric distribution, although that may have contributed somewhat as well. Basically, from what I've read most of the Earth's land was the Outback at the time of Pangea, with tropical coasts and an unimaginably large rain shadow in the center.
by AnSionnachRua 531 days ago · link
Perihelion is actually tomorrow, this year. :) And aphelion will fall on July 5th.