Sandy Gas Jets Hypothesized on Mars

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zorg.ch
#91872 by @ 24.08.2006 00:00 - nach oben -
Sandy Gas Jets Hypothesized on Mars


Explanation:
What's causing seasonal
dark spots on Mars?

Every spring, strange
dark spots appear near the Martian poles,
and then vanish a few months later.

These spots typically span 50 meters across and appear
fan shaped.

Recent observations made with
THEMIS instrument onboard NASA's
Mars Odyssey,
currently orbiting
Mars, found the spots to be as cold as the
carbon dioxide
(CO2) ice beneath them.

Based on this evidence, a
new hypothesis has been suggested where
the spots are caused by
explosive jets of sand-laden CO2.

As a pole warms up in the spring,
frozen CO2
on the surface thins, perforates, and begins to vent gaseous CO2 held
underneath.

Within this hypothesis,
interspersed dark sand would explain the color of the spots,
while the underlying frozen CO2 would explain the coolness of the spots.

Pictured above,
an artist depicts what it might be like to stand on Mars and witness the
venting of these tremendous gas and dust jets.




Credit & Copyright
zorg.ch
#91877 by @ 24.08.2006 00:26 - nach oben -
sandy? wo?
zorg.ch
#91883 by @ 24.08.2006 08:48 - nach oben -
läbt echt die no?
zorg.ch
#91884 by @ 24.08.2006 09:46 - nach oben -
jojo... die bringsch eh nöd so schnell tot.
zorg.ch
#91961 by @ 24.08.2006 20:21 - nach oben -
do