What's with the seam on Iapetus?

in science •  6 years ago 

Looks like someone didn't clean this one up properly after coming out of the mold.

Iapetus.jpg
By NASA / JPL-Caltech / Space Science Institute / Cassini Orbiter - https://medium.com/starts-with-a-bang/the-strangest-moon-in-the-solar-system-bdc675ec411c https://photojournal.jpl.nasa.gov/catalog/PIA06166 (original mosaic), Public Domain, Link

What's even more intriguing about this ridge that is 20 km wide and 13 km high also matches the equator. It has plenty scientists scratching their heads.

Here it is from the other side, and it is ancient. It even has its own craters.

Image snipped from the "snowy side"

Iapetus as seen by the Cassini probe - 20071008.jpg
By NASA/JPL/Space Science Institute - PIA08384: The Other Side of Iapetus, Public Domain, Link

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that's funny, one hell of a big mold though

Has sort of a walnut look to it