Jupiter
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Jupiter the sixth planet was named after the greek god Zeus. Zeus was also the dad of Cronus (Saturn). Jupiter is also known as the "wandering star". Jupiter was first discovered by pioneer 10 in 1973. The spacecraft Galileo orbited Jupiter for 8 years. Jupiter is one of the gas planets. Jupiter is made of 90% hydrogen and 10% helium. Jupiter is twice as big as all the planets combined. Jupiter probably has a core full of rocky material. Jupiter and all the other gas planets have high velocity. Jupiter has a huge magnetic field. In the nighttime sky Jupiter is the second brightest planet. Jupiter has 63 known satellites.J upiter has 16 known moons. Jupiter also has 3 rings. Jupiter radiates more energy into space than it receives from the sun. Jupiter is almost as large in diameter as a gas giant can be.