Quote:
Originally Posted by DGthe3
A theory doesn't need proof ... but some evidence to support it would be helpful.
Such as mass extinctions actually occurring at regular intervals (which they they don't)
Or the equations that predict the motions of the planets requiring some significant 'adjustment factor' which could be explained by this second sun (they don't)
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They do happen at fairly regular intervals. Or at least, a very large impact happens at fairly regular intervals. They can tell by concentrations of irridium embedded in very old rock. For example when the one that made the chicxulub crater (the one they think wiped out the dinosaurs), they can find a layer of irridium embedded in rock dates back that far. The event happens about every 26 million years.