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Old 14-01-2018, 02:00 PM
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tonybarry (Tony)
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tonybarry is offline
Join Date: Aug 2007
Location: Penrith, Sydney
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The main issue with the proposition is the absolutely enormous amount of energy required to alter the spin axis of the earth. The rotational inertia is immense and the necessary energy could not be applied to the globe easily.

The only forces we know that could do the job would be asteroid impacts, at Late Heavy Bombardment levels.

Given that this would provide a comprehensive extinction of life on earth, I don't think it could have happened, and likely not since the Cambrian Era when life is first known to have existed here.

The current understandings of Planet Nine solar system mechanics indicate that it *may* be possible for large objects in highly inclined orbits to alter the plane of the Solar System with respect to the Sun's equator; but this is not confirmed, and in any case does not work to change the spin axis of the planets.

Tony Barry

Last edited by tonybarry; 14-01-2018 at 02:12 PM.
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