Hyperion, an outer moon of Saturn, is the planets’s 8th largest. It’s highly irregular in shape, rotates chaotically, is very low in density, and has an unusual sponge-like appearance. It was the first non-rounded moon to be discovered, in 1848.
Credits:
- Model from 3D Asteroid Catalogue, Thomas 2018 https://3d-asteroids.space/moons/S7-Hyperion
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Map source:
http://photojournal.jpl.nasa.gov/catalog/PIA07761
Author: NASA / JPL / SSI / Gordan Ugarkovic