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Cassini Finds Fresh Ice in Northern Hemisphere of Enceladus 5nvklj





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Cassini Finds Fresh Ice in Northern Hemisphere of Enceladus

Dragon
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Cassini Finds Fresh Ice in Northern Hemisphere of Enceladus Empty Cassini Finds Fresh Ice in Northern Hemisphere of Enceladus

Post by Dragon Tue Sep 22, 2020 2:35 am

Spectral data gathered by the Visual and Infrared Mapping Spectrometer (VIMS) onboard NASA’s Cassini spacecraft provide strong evidence that the northern hemisphere of Saturn’s moon Enceladus has been resurfaced with ice from its interior.

In 2005, the scientists discovered that Enceladus, which looks like a highly reflective, bright white snowball to the naked eye, shoots out enormous plumes of ice grains and vapor from an ocean that lies under the icy crust.

The new spectral map shows that infrared signals clearly correlate with that geologic activity, which is easily seen at the south pole.

That’s where the so-called ‘tiger stripes’ blast ice and vapor from the interior ocean.

But some of the same infrared features also appear in the northern hemisphere.

That tells the researchers not only that the northern area is covered with fresh ice but that the same kind of geologic activity — a resurfacing of the landscape — has occurred in both hemispheres.

Continued...
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Cassini Finds Fresh Ice in Northern Hemisphere of Enceladus 334pu7m
Dragon
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Post by Dragon Tue Sep 22, 2020 2:36 am

Cassini Finds Fresh Ice in Northern Hemisphere of Enceladus Image_8868-Enceladus-Spectral-Map
Image credit: NASA / JPL-Caltech / University of Arizona / LPG / CNRS / University of Nantes / Space Science Instituto.

In these detailed infrared images of Enceladus, reddish areas indicate fresh ice that has been deposited on the surface.

Source / Image Courtesy


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Cassini Finds Fresh Ice in Northern Hemisphere of Enceladus 334pu7m
Dragon
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Post by Dragon Tue Sep 22, 2020 2:38 am



Enceladus: Cassini Cracks the Case of the Icy Moon


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Cassini Finds Fresh Ice in Northern Hemisphere of Enceladus 334pu7m
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Cassini Finds Fresh Ice in Northern Hemisphere of Enceladus Empty Re: Cassini Finds Fresh Ice in Northern Hemisphere of Enceladus

Post by Dragon Tue Sep 22, 2020 2:39 am



Cassini spacecraft data has been used to create a new infrared views of Saturn's moon Enceladus. "Reddish areas indicate fresh ice," according to NASA's Jet Propulsion Laboratory.


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Cassini Finds Fresh Ice in Northern Hemisphere of Enceladus 334pu7m

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