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Affichage des articles dont le libellé est ASTRONOMY - Saturn's Hyperion: A Moon with Odd Craters. Afficher tous les articles
Affichage des articles dont le libellé est ASTRONOMY - Saturn's Hyperion: A Moon with Odd Craters. Afficher tous les articles

16/03/2023

ASTRONOMY - Saturn's Hyperion: A Moon with Odd Craters

 2023 March 12

An oblong moon is shown that appears sponge like and 
features many odd craters. Close inspection shows that the 
bottoms of these craters are covered with a dark material.
Please see the explanation for more detailed information.

Saturn's Hyperion: A Moon with Odd Craters
Image Credit: NASAESAJPLSSICassini Imaging Team

Explanation: What lies at the bottom of Hyperion's strange craters? To help find out, the robot Cassini spacecraft that once orbited Saturn swooped past the sponge-textured moon and took images of unprecedented detail. A six-image mosaic from the 2005 pass, featured here in scientifically assigned colors, shows a remarkable world strewn with strange craters and an odd, sponge-like surface. At the bottom of most craters lies some type of unknown dark reddish material. This material appears similar to that covering part of another of Saturn's moons, Iapetus, and might sink into the ice moon as it better absorbs warming sunlightHyperion is about 250 kilometers across, rotates chaotically, and has a density so low that it likely houses a vast system of caverns inside.

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