Mimas tagged posts

Mimas’ surprise: Tiny Moon holds Young Ocean beneath Icy Shell

Mimas' surprise: Tiny moon holds young ocean beneath icy shell
Mimas measurements and ocean models. The amplitude of libration in longitude ϕs and periapsis drift variation Δϖ for different internal structure models with an ocean. The colors represent the thickness of the ice crust hs. The gray areas correspond to the measured libration amplitude and perihelion longitude variation. The dispersion represents sensitivity to the crustal polar and equatorial flattenings (see additional tests in Methods). Credit: Nature (2024). DOI: 10.1038/s41586-023-06975-9

Hidden beneath the heavily cratered surface of Mimas, one of Saturn’s smallest moons lies a secret: a global ocean of liquid water. This astonishing discovery, led by Dr...

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Internal Ocean in Small Saturn Moon uncovered

NASA / JPL-Caltech / Space Science Institute An SwRI scientist has discovered that Saturn’s small moon Mimas (left) likely has something in common with its larger neighbor Enceladus: an internal ocean beneath a thick icy surface. Thought to be a frozen inert satellite, Mimas is now considered a “stealth” ocean world with a surface that does not betray what lies beneath. This discovery could greatly expand the number of potentially habitable worlds thought to exist.

Discovery could point to a new class of ‘stealth’ ocean worlds. A Southwest Research Institute scientist set out to prove that the tiny, innermost moon of Saturn was a frozen inert satellite and instead discovered compelling evidence that Mimas has a liquid internal ocean...

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Cassini Captures Group Photo of Tethys, Enceladus, Mimas

Image: Cassini captures group photo of Tethys, Enceladus and Mimas

Three of Saturn’s moons, Tethys, Enceladus and Mimas, taken in visible light with the Cassini spacecraft narrow-angle camera on December 3, 2015 is shown in this NASA image released on February 22, 2016. © NASA / JPL-Caltech / Space Science Institute / Reuters

Tethys (660 miles or 1,062 kilometers across) appears above the rings, while Enceladus (313 miles or 504 kilometers across) sits just below center. Mimas (246 miles or 396 kilometers across) hangs below and to the left of Enceladus. This view looks toward the sunlit side of the rings from about 0.4 degrees above the ring plane. The image was taken in visible light with the Cassini spacecraft narrow-angle camera on Dec. 3, 2015.

The view was acquired at a distance of ~837,000 miles from Enceladus, with an image scale of 5 miles per ...

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