In a message dated 3/19/2006 9:40:48 PM Eastern Standard Time,
t.p.wallace@gmail.com writes:
This can vary wildly in planets without
moons, playing havoc with climate.
--Tim
Mars, for example, has a varying obliquity (axial tilt) from 0 degrees to 90
degrees over a cycle of many millions of years. It is believed that this
might cause the planet to episodically freeze and then melt and then freeze again.
Phil Metzger
Received on Mon Mar 20 04:04:08 2006
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