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
The Sands of Mars one of the most believable trips to Mars." The book has given an inspiration for the title of guitarist Jimi Hendrix's last and unfinished album, "First Rays of the New Rising Sun". The album also contains an unfinished song "New Rising Sun" in which "Jupiter Sun" is mentioned. It was also published later as part of "The Space Trilogy", an omnibus of three of Clarke's earlier works which also includes "Islands in the Sky" and "Earthlight". The transformation of Phobos into a second sun has similarities to what is done to Jupiter in Clarke's novel "". In that case, alien