Saturn is the one who has the most moons of that planet, it has 53 moons. Saturn has a beautiful ring. Jupiter is the biggest planet in the universe and has the biggest moon with it. Mars has 2 moons, their names are Phobos, Deimos. Mercury and Venus have no moons because mercury is too close to the sun and it won’t be able to have the moon because it barely has gravity to hold the moon. A scientist doesn't know why Venus doesn’t have the moon. Of course, we know who has the moon is earth only has one moon. Uranus has 27 moons, some of them are made of ice. Jupiter has 13 moons, one of them Triton is big as dwarf planet Pluto. Galileo discovered the four moons of Jupiter they are called the Galilean satellites. There is also a Great Red spot in Jupiter, it is a big storm. Jupiter takes 12 earth years to orbit the sun, Jupiter rotates faster than other planets in the solar system. A day in Jupiter lasts 9h and 55m, If you didn't know Jupiter has rings to 4 around its equator, But they are really thin so we can't see them, The only probe that traversed Jupiter's atmosphere is Galileo, It took 6 years to get there and it lasted for 59 minutes in Jupiter. For Jupiter's size, it failed to be a star if it had been 80 times larger it would've been a star. Saturn, Days last for 10h and 14m, Due to the fast rotation on its axis, Saturn is flattened at the poles, Saturn's rings are formed by particles of an ancient moon, which was destroyed in a collision 50 million years ago, but Saturn's will disappear some day, a year on Saturn lasts more than 29 earth years, if you didn't know yet Saturn is the most moon in the solar system, Saturns largest moon is Titan is it the only one with a thick atmosphere in the solar system. Neptune is the farthest away from the sun, Neptune is the coldest planet its average is -221.4 celsius, (366.5 Fahrenheit), Neptune also has rings, the only probe that traveled to Neptune was Voyager 2, NASA has a tentative plans to send a probe in 2016, that will reach Neptune 14 years later, in 2030, Neptune takes 165 earth days to orbit the sun, the planet has only completed one orbit around the sun, Neptune is the planet with the fastest wind in our solar system, Neptune has a great dark spot, (the size of earth) in 1944 an unexpected phenomenon occurred the great dark spot disappeared, giving a rise to a new dark spot. Uranus has 11 rings compromised as ice and small rocks. Uranus has 27 moons and rings. Titania is the largest moon in Uranus, they orbit really close to each other while orbiting so a collision between them won’t take long. A year on Uranus is 84 earth years. The pale blue of Uranus is due to methane, which filters red light. It has a large rocky core, due to the tremendous pressure of the planet, It could contain billions of large diamonds, its distance from the sun is twice more than Saturn.