Why Are There Mysterious Pac-Men on Saturn&#39;s Moons?S  After
discovering Pac-Man on the Death Staraka Mimas—NASA has
discovered a new Pac-Man in Tethys. And they still don't know
why the hell this shape appears, but they have a theory:
Scientists theorize that the Pac-Man thermal shape on the
Saturnian moons occurs because high-energy electrons bombard low
latitudes on the side of the moon that faces forward as it
orbits around Saturn, turning a fluffy surface into hard-packed
ice. As a result, the altered surface does not heat as rapidly
in the sunshine or cool down as quickly at night as the rest of
the surface, similar to how a boardwalk at the beach feels
cooler during the day but warmer at night than the nearby sand.
The most surprising thing about the Tethys Pac-Man is that it
also appears on visible-light images, not only thermal analysis.
I can't wait till the discover Mario jumping on Titan. [NASA]