Dinosaur Killer Impacts on Mars?
- From: panzerboy@xxxxxxxxx
- Date: 29 May 2006 22:03:47 -0700
Hi all, my first post on this NG.
Feel free to suggest any other NG if this question could be posted
elsewhere.
If the Earth has been periodically bombarded with Dinosaur Killer
Asteroids/Comets, shouldnt the same have happened on Mars?
I guess the questions are, has the earth been periodically bombarded. I
know of good evidence for one such encounter causing the K-T boundary.
I dont know if other extinction events have been so strongly linked to
impacts.
If the earth gets bombarded would Mars suffer similar?
Mars's orbit is larger, Comets tend to close in to the sun suggesting
encounters would be more likely the closer the orbit of a planet is to
the sun.
There are certainly lots of craters on Mercury, are they 'Dinosaur
killer' sized?
If such events had heppened on Mars, would the evidence be obvious? A
lot of dust gets blown around so perhaps large craters have been filled
in or eroded?
What could be the effect of such an impact on have on Mars.
Could such be the reason Mars now has a thin atmosphere & next to no
water?
This presumes Mars once had flowing water, a suggestion I suppose that
is far from proven.
I think, its likely Mars once had water, its likely Mars has suffered
large impacts. Could an impact have boiled away Mars's water?
Jeremy Thomson
.
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