Curiosity Rover Traces Loss Of Martian Air
From: Ray Dickenson <r.dickenson.nul>
Date: Mon, 8 Apr 2013 16:04:04 +0100
Archived: Tue, 09 Apr 2013 06:47:22 -0400
Subject: Curiosity Rover Traces Loss Of Martian Air
www.bbc.co.uk/news/science-environment-22063337
[Quotation Begins]
Curiosity Rover Traces Loss Of Martian Air
It has analysed the different types, or isotopes, of argon atoms
in the planet's air.
The study shows how a heavier version of the element has built
up relative to a lighter one during Mars' history.
It is confirmation that a substantial portion of the planet's
original atmosphere has escaped into space.
Scientists think that perhaps as much as 95% of the gaseous
shroud Mars started out with billions of years ago has gone.
[Quotation Ends]
It doesn't seem to mention any date. I.e. at what period the
thinning of Martian air began - but the finding seems to agree
with Tom Van Flandern's view that something bad happened to Mars
when it was a protected Moon, probably of one of the gas giants.
Tom's opinion was based on the differing thicknesses of Mars'
crust and differing topography - cratering versus seas - which
all seem to say it was a Moon in earlier times.
Cheers
Ray D
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