I find it hard to believe

Started Oct 12, 2012 | Discussions thread
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bobn2
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I find it hard to believe
Oct 12, 2012

that these flow marks have been there for millions of years:

(from http://marsprogram.jpl.nasa.gov/msl/multimedia/images/)

I mean, unless this planet is completely geologically and meteorologically inactive, wouldn't marks like this get obscured in quite a short time?

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Bob

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