Is the radius of Earth's orbit increasing or decreasing?

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Offline BillJx

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Does the average radius of the Earth's orbit increase or decrease over time, and by how much?
« Last Edit: 23/06/2008 08:51:58 by chris »
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Offline RD

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Re: Is the radius of Earth's orbit increasing or decreasing?
« Reply #1 on: 22/06/2008 17:24:22 »
Milankovitch cycles are the collective effect of changes in the Earth's movements.

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http://en.wikipedia.org/wiki/Milankovitch_cycles
« Last Edit: 23/06/2008 11:21:09 by RD »

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Offline Alan McDougall

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Re: Is the radius of Earth's orbit increasing or decreasing?
« Reply #2 on: 23/06/2008 08:44:51 »
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

« Last Edit: 23/06/2008 08:47:42 by Alan McDougall »
The Truth remains the Truth regardless of our beliefs or opinions the Truth is always the Truth even if we know it or do not know it (The Truth remains the Truth)