Magnetosphere of Jupiter By 1973 the magnetic moment was known within a factor of two, whereas the tilt was correctly estimated at about 10°. The modulation of Jupiter's DAM by Io (the so-called Io-DAM) was discovered in 1964, and allowed Jupiter's rotation period to be precisely determined. The definitive discovery of the Jovian magnetic field occurred in December 1973, when the Pioneer 10 spacecraft flew near the planet. As of 2009 a total of eight spacecraft have flown around Jupiter and all have contributed to the present knowledge of the Jovian magnetosphere. The first space probe to reach Jupiter was Pioneer 10 in
Puzzle of the Space Pyramids pyramid is found on Jupiter, its existence may point the way to their builder's secret. The novel is a fix-up novel taken from stories published in Thrilling Wonder Stories. Puzzle of the Space Pyramids Puzzle of the Space Pyramids is a fix-up science fiction novel by Eando Binder. It tells the story of several successive space expeditions to Mars, Venus, Mercury and Jupiter. As each planet is found to harbor various (usually hostile) alien life, each expedition must survive both the elements and the attacks by the natives. The continuing thread through the expeditions is the discovery of an ancient