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Old 06-13-2016, 01:03 AM
Mangetout Mangetout is offline
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Join Date: May 2001
Location: England
Posts: 57,340
Originally Posted by Stranger On A Train View Post
"...a few thousand kilometres nearer or further from the sun" is not going to significantly change the thermodynamic state of the Earth, and even a few million is not going to make the planet uninhabitable. The sun goes through phases in variation of irradiance and temperature.

Do those phases oscillate about some sort of consistent mean?