Orbital Period and Rotation Period
The time that the planets finish orbiting is called a year. The time that the planets finish rotating is called a day.
Venus is the second planet from the Sun and the third smallest planet in the solar system. Some people call Venus "Earth's Sister" because it is almost the same size of Earth, but its surface is different from Earth. Venus is the hottest planet. Venus is the slowest rotating planet and it rotates in the opposite direction of any other planet. Venus is the second fastest orbiting planet in the solar system after Mercury. Venus has no moons.
Earth is the third planet from the Sun and is the fourth smallest planet in the solar system. Earth is the only planet in the solar system we know that supports life and the only planet we live on. Earth is sometimes called "The Goldilocks Planet" because it is not too hot like Venus and it is not too cold like Uranus. Earth is the third fastest orbiting planet and the third fastest rotating planet in the solar system. Earth has 1 known moon.
Mars is the fourth planet from the Sun and the second smallest planet in the solar system after Mercury. Mars has a rocky dusty surface of iron oxide which gives it a reddish color appearance and is why some people call Mars "The Red Planet". Mars is the fourth fastest orbiting planet and is the fourth rotating planet in the solar system. Mars has a same length of rotation period as Earth. People are interested in Mars because they think that people can live there with a help of some special equipment. Mars have a thin atmosphere made of carbon dioxide and tiny amount of oxygen. Mars has 2 known moons: Phobos and Deimos.
Jupiter is the fifth planet from the Sun and the largest planet in the solar system. Jupiter is called a "gas giant" because it is so big. People can't land on Jupiter because there is no ground to land on. Eventhough, if there is one to land on, Jupiter is covered by terrifying storms, stronger than the storms on Earth. Jupiter is the stormiest planet in the solar system. There is the biggest Jovian storm called The Great Red Spot. If people try to land on Jupiter, the gravity is so intense that it can crush people flat to death. Jupiter is the most massive planet. The gravity is the most intense in the solar system. Jupiter is the fourth slowest orbiting planet and the fastest rotating planet in the solar system. Jupiter has 67 known moons.
Saturn is the sixth planet from the Sun and the second largest planet in the solar system. Saturn is extremely superfamous for its beautiful rings made of ice and rocks. Saturn has crystals of ammonia which gives it a pale yellow color. Saturn is the second fastest rotating planet and the third slowest orbiting planet in the solar system. Saturn has 62 known moons.
Uranus is the seventh planet from the Sun and the third largest planet in the solar system. Uranus has rings around it, but it's much thinner than Saturn's rings. Uranus is the only planet to be tilted so much that it rotates sideways or up and down. Uranus is sometimes called "The Sideways Planet". Uranus is the coldest planet in the solar system, with an atmosphere made of methane and helium which gives it a lovely blue color. Uranus is also called the most boring planet because it has no identifying appearance. Uranus is the second slowest orbiting planet after Neptune and is the fourth fastest rotating planet in the solar system. Uranus has 27 known moons.
Neptune is the eighth planet from the Sun, the fourth largest planet, and the farthest planet in the solar system. Neptune is a darker blue than Uranus and both of them are similar to each other and scientists are not sure why. There is a huge Neptunian storm called the Great Dark Spot, similar to Jupiter's Great Red Spot, but it disappeared completely in the late 20th century. Neptune is the windiest planet that has the fastest winds than any other planet. Since Neptune is far away from the Sun, Neptune is the slowest orbiting planet. Poor Neptune takes a very long time to finish orbiting around the Sun, for 165 Earth years. The same place where Neptune is now, 165 years ago is before the American Civil War, before computers, phones, tablets, television and cars has been invented. Neptune has the longest orbit of any other planet in the solar system. Neptune is the third fastest rotating planet. Neptune has 14 known moons.