>I'm still not clear as to why the mid-Pliocene crater needs an exploding
>planet when there are plenty of ordinary asteroids or comets that could
do
>the job. Also, there are other, bigger impacts on Earth besides the
K/T.
>Whether there is any evidence for a Permo-Triassic impact is still
debated.
I think Tom's primary concern is how to explain the features throughout
the solar system suggesting an exploded planet(s). I don't think anyone
has responded to his original question to Adam:
"Now the question I pose back to you is this: Will you seriously maintain
that the distribution of dark and bright surfaces all over the solar
system
is a coindicence, or concede that this distribution is a good indicator
(not
a proof) of a relatively recent massive explosion in the solar system?
-|Tom|-"
A second question I have is about the origin of the lunar mares, which I
understand are underlain by mascons (mass concentrations). What is the
prevailing explanation for the origin of the mares, which are only on the
near side of our moon?
Bill
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