On Europa High-resolution photos taken by NASA's Galileo space probe show that the frozen surface of Jupiter's moon Europa apparently has thickenings that are akin to mountains. It has been known for some time that Europa's surface occasionally pulls apart, allowing matter from its interior to rise to the top. Until now, there was no evidence to show where this matter collects. Apparently, the newly discovered furrow formations provide the answer to this question. Europa, one of the four satellites around Jupiter, is the object of great scientific interest thanks to its frozen surface.
Astronomers suspect that it conceals liquid water and thus, ideal conditions for primitive life.