Exploration of Jupiter disadvantages for colonization because of the severe radiation conditions prevailing in Jupiter's magnetosphere and the planet's particularly deep gravitational well. Jupiter would deliver about 36 Sv (3600 rem) per day to unshielded colonists at Io and about 5.4 Sv (540 rems) per day to unshielded colonists at Europa, which is a decisive aspect due to the fact that already an exposure to about 0.75 Sv over a period of a few days is enough to cause radiation poisoning, and about 5 Sv over a few days is fatal. Ganymede is the Solar System's largest moon and the Solar System's only
Hermippe (moon) August 2003 by the IAU, after Hermippe, a lover of Zeus (Jupiter). Hermippe belongs to the Ananke group, retrograde irregular moons which orbit Jupiter between 19.3 and , at inclinations of roughly 150°. Hermippe (moon) Hermippe ( ; Greek "Ερμίππη"), or ', is a natural satellite of Jupiter. It was discovered by a team of astronomers from the Institute for Astronomy of the University of Hawaii led by David Jewitt and Scott S. Sheppard and Jan Kleyna in 2001, and given the temporary designation '. Hermippe is about 4 kilometres in diameter, and orbits Jupiter at an average distance of