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Originally posted by BloodRedSky
or maybe the moon Phobos?
Originally posted by TopSecretArea
Now this was somehow mind blowing..!
Good and interesting find, really don't have any idea or even the smalles clue of what this might be.
Sand-laden jets shoot into the polar sky in this view by noted space artist Ron Miller. It shows the Martian south polar icecap as southern spring begins.
Sunday, 20 August 2006
BBC News
Excerpt:
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 100 mph 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.
Monday 21st August 2006
Unlike anything on Earth By Lucy Sherriff
Excerpt:
Every spring, the southern polar cap on Mars almost fizzes with carbon dioxide, as the surface is broken by hundreds of geysers throwing sand and dust hundreds of feet into the Martian "air".
The discovery was announced in the journal Nature by researchers at the Arizona State University, based on data from the Thermal Emission Imaging System on the Mars Odyssey orbiter.
Images sent back by the probe showed that as the sun began to warm the pole, the polar cap began to break out in dark spots. Over the days and weeks that followed, these spots formed fan-like markings, and spidery patterns. As the sun rose higher in the Martian sky, the spots and fans became more numerous.
"Originally, scientists thought the spots were patches of warm, bare ground exposed as the ice disappeared," said lead scientist Phil Christensen. "But observations made with THEMIS on NASA's Mars Odyssey orbiter told us the spots were nearly as cold as the carbon dioxide ice, which is at minus 198 degrees Fahrenheit."
The team concluded that the dark spots were in fact geysers, and the fans that appeared were caused by the debris from the eruptions.
Artist's impression of how the Martian geysers may look. Pic: Arizona State University/Ron Miller
Christensen said: "If you were there, you'd be standing on a slab of carbon-dioxide ice. Looking down, you would see dark ground below the three foot thick ice layer.
"The ice slab you're standing on is levitated above the ground by the pressure of gas at the base of the ice."
He explains that as the sunlight hits the region in the spring, it warms the dark ground enough that the ice touching the ground is vaporised. The gas builds up under the ice until it is highly pressurised and finally breaks through the surface layer.
As the gas escapes, it carries the smaller, finer particles of the soil along with it, forming grooves under the ice. This "spider" effect indicates a spot where a geyser is established, and will form again the following year.
Originally posted by Amaterasu
I too am clueless. Though the second one reminded me of a polar pic of one of the planets...wish I could retrieve which one.
Originally posted by internos
Thanks for sharing, Ron:
the images in the OP look to be slope streaks to me, but it's hard to say without looking at the whole contest:
Originally posted by NephraTari
I would like to see an original source photo and see the whole picture, not just the cropped image.
Originally posted by zorgon
Originally posted by BloodRedSky
or maybe the moon Phobos?
Moon Phobos??? Nice one
Yup looks like the shadow of the moon alright
MSSS Image # M11-00072 - First Spotted by Undo
www.msss.com...
PS Please DO try to limit those one liners
Originally posted by zorgon
Originally posted by NephraTari
I would like to see an original source photo and see the whole picture, not just the cropped image.
Get over it and do some legwork
[edit on 30-8-2008 by zorgon]