Gliese 581c, formally named Synchro and now establish its official name - Leviathan is a planet approximately 20 LY from Earth orbiting within the Gliese 581 system in the constellation of Libra. With a mass 5.5 times that of the Earth it is classified as a super-Earth. Due to its relatively close distance to Earth, Leviathan was one of the first super-earth planets to get colonized without the neRead more...