Hoping for Europa
“There is an ocean beneath the icy crust of Jupiterâ€™s moon Europa. Strange creatures could be swimming in these alien waters, but so far no missions have been sent there to investigate this possibility…”
“The Europa-Jupiter System Mission (EJSM) calls for one spacecraft to orbit Europa and another to orbit Ganymede, another large moon of Jupiter that also may have a liquid ocean locked beneath an icy outer layer.
“EJSM would be a joint mission of NASA and the European Space Agency, with ESA in charge of the Ganymede orbiter and NASA directing the Europa orbiter. Working together, the two spacecraft also would be able to conduct limited studies of the large moons Io and Callisto, as well as the planet Jupiter.”