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n2doc Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-20-06 11:38 AM
Original message
CO2 Geysers on Mars
Ice geysers 'discovered on Mars'

An artist's impression shows the geysers erupting through ice

Geysers spewing sand and dust hundreds of feet into the air have been discovered on Mars, scientists say.Images from a camera orbiting Mars have shown the 100mph jets of carbon dioxide erupt through ice at the planet's south pole, Arizona State University says. The orbiting camera, called the Thermal Emission Imaging System (Themis), is on the Mars Odyssey probe. The geyser debris leaves dark spots, fan-like markings and spider-shaped features on the ice cap. The scientists said geysers erupted when sunlight warming the ice turned frozen carbon dioxide underground into high-pressure gas.

"If you were there, you'd be standing on a slab of carbon dioxide ice," said the university's Dr Phil Christensen. "All around you, roaring jets of CO2 gas are throwing sand and dust a couple of hundred feet into the air." Dr Christensen said the process was "unlike anything that occurs on Earth".

His team discovered the jets through examining more than 200 Themis visible and infrared images. The findings were published in the latest edition of the journal Nature.
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soothsayer Donating Member (1000+ posts) Send PM | Profile | Ignore Sun Aug-20-06 12:45 PM
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1. Even better, cool shells (trilobite, whelk, urchin) pics from NASA
http://xenotechresearch.com/SpSol913.htm

http://xenotechresearch.com/seagoph1.htm

Cool muddy tracks from the Mars rover
http://xenotechresearch.com/spirice1.htm

Much more at that site (with links to the original nasa photos, so don't cry "photoshopped!"
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Nihil Donating Member (1000+ posts) Send PM | Profile | Ignore Mon Aug-21-06 05:44 AM
Response to Reply #1
2. It's not April 1st is it?
Those shells look remarkably real and in context ... ?
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eppur_se_muova Donating Member (1000+ posts) Send PM | Profile | Ignore Mon Nov-13-06 07:45 PM
Response to Reply #1
3. Oh for crap's sake ... can you say "Pseudofossil"?
Wiki or google it. It's a well-known phenomenon. Don't judge by outward shape alone something that's pretty close to looking like an ordinary rock in the first place.
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Beelzebud Donating Member (1000+ posts) Send PM | Profile | Ignore Tue Nov-14-06 11:50 AM
Response to Reply #3
6. Psuedoscience: The Legacy of Art Bell and Richard Hoagland...
:eyes:
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eppur_se_muova Donating Member (1000+ posts) Send PM | Profile | Ignore Mon Nov-13-06 07:46 PM
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4. Aren't these "dry geysers"? That really is new.
Didn't see this when it was first posted, interesting find.
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bananas Donating Member (1000+ posts) Send PM | Profile | Ignore Tue Nov-14-06 02:54 AM
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5. link, please. nt
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