Looking at this picture, what do you see? It resembles human muscle with the skin peeled off, or a close up shot from one of those Bodies exhibits. For a second you might even think it could be one of those balls made entirely of rubber bands, or a golf ball with the hard, dimpled rind removed from the outside. As you probably already knew, it isn’t of those things. This is an image of Jupiter’s moon of Europa, and those creepy looking red strands, the pieces that really do look like muscle, are rivers of blood red ice.
This image of Europa comes courtesy of NASA’s Galileo spacecraft which is exploring that particular region of space. The picture is a combination of “clear-filter grayscale data” from a single orbit (on November 6, 1997) of Jupiter’s satellite and lower resolution color data from another pass (taken in 1998). Those red threads that sprawl out throughout the picture are ice made up of water mixed with hydrated salts, which the scientists and NASA think could possibly be sulfuric acid or magnesium sulfate. They also believe that surface characteristics such as these—the ridges and chaotic surface—could indicate contact with a “global subsurface ocean layer during or after their formation.”