Jupiter

Collier's New Encyclopedia (1921)

in Roman mythology, the 483,000,000 miles; iles; and a railway train il a talike train supreme Roman deity, identified with the Greek miles traveling 50 ng 50 an hour, would an hour, would Zeus. He was the son of Saturn require nine centuries to go from the sun and Rhea. Jupiter was the king and to go from the sun to Jupiter. The latter body revolves on its father of men, but his power extended over er body revolves on axis in about 9 hours and 55 minutes, which the deities also; and everything was urs and 55 minutes, is the length of its day and night. f its day and night. subservient to his will except the Fates. Though traveling in its orbit round the its orbit round the sun at the rate of 28,743 miles an hour, equity has of deciding cases brought it takes nearly 12 years to complete its revolution; this, therefore, is the length of its year. It is surrounded by four conspicuous belts of a brownish-gray color, two N., two S. of the equator, with feebler ones toward the poles. The equatorial region of the planet is brighter than the rest. Jupiter has nine satellites, four of which were discovered Jan. 6, 1610, by Galileo, and another Sept. 9, 1892, by Prof. Edward E. Barnard, then of the Lick Observatory. The four discovered by Galileo are usually known by their numbers, which proceed in order of distance from the planet. If named they are called Io, Europa, Ganymede and Callisto. The 9th satellite was discovered by Nicholson in 1914.