Naked Science Forum
Non Life Sciences => Physics, Astronomy & Cosmology => Topic started by: BillJx on 03/06/2007 07:06:13
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Does the average radius of the Earth's orbit increase or decrease over time, and by how much?
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Milankovitch cycles are the collective effect of changes in the Earth's movements.
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http://en.wikipedia.org/wiki/Milankovitch_cycles
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Hi
I believe the earths orbit changes from elliptical to almost circular over thousands of years. This is the main reason for ice ages and periods of heat.
I would say the earth like all other orbiting objects are slowly moving away from the sun over billions of years.
Regards
Alan