A short time ago there was an issue discussed here
about non-linear systems and their relation to chaos.
I volunteered hat the solar system was a non-linear
system and that there was a possibility that the Earth
could be expelled from the system.
The URL at the top points to are part of a current
theory that the solar system orbits change chaotically
on the order of hundreds of millions of years and that
the effect of this chaos on the orbits of the inner
planets expelled an asteroid from its orbit. This is
seen in this theory as the source of the object which
killed the dinosaurs 65 million years ago.
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