Mercury Mercury is the second smallest of the nine planets. Its diameter is 4879.4 km. It is the closest planet to the sun. It is only 35 million miles away from the sun. Because it is the closest planet to the sun the temperature is 700 degress fahrenheit during the day, at night it is 100 degress fahrenheit. It takes Mercury 59 Earth days to travel around the sun. It travels around the sun at 30 miles per hour. Mercury has no moons. No one has ever been on Mecury. Venus Venus is the second planet from the sun. Its diameter is 12104 km. Venus is the hottest of the nine planets. The temperatures can reach 900 degress fahrenheit. The reason Venus is so hot is because clouds made of acid surround Venus and trap in the suns heat.Thats what make it the hottest planet. Venus has no moons like Mercury. It takes Venus 225 earth days to orbit the sun. No one has ever been on Venus like mercury. Venuses tilt of axis is 178 degrees. Earth Earth is the third planet from the sun. Earth seems very big to us but it is only a tiny spect floating through space. Earth's diameter is 12756 km. Earth is special because it is the only planet that supports life. One day on Earth is 24 hours. One year is 365 days. Earth is made up of 90% of water and 10% land. Earth has one moon. It travels around Earth every 29 and a half days. Earth has many satellites orbiting around it. Earth has 7 continents. They are North America, South America, Europe, Asia, and Africa. Earth's tilt of axis is 23.4 degrees. Mars Mars is the fourth planet from the sun. It is known as the red planet because of its red soil. Mars has two moons. One year on mars is 1.9 Earth years. It's diameter is 6787 km. Its tilt of axis is 25 degrees. Mars has polar ice caps, extinct volcanos, and vallys like Earth. Mars has iron dust and freezing deserts. No humans have been on mars but space probes have landed and taken pictures of the rocky deserts. Jupiter Jupiter is the fifth planet from the sun. We call Jupiter the gas giant because it is the biggest planet in the solar system and its made up of gas. Jupiter's diameter is 142,800 km. Jupiter's surface is made of 90% hydrogen 10% helium and 0.7% methane. More than 1,000 Earths can fit in Jupiter. It takes Jupiter 11.9 Earth years to orbit the sun. Jupiter has 61 moons. Jupiter is famous for it's Great Red Spot. Scientist believe that The Great Red Spot is a giant hurricane that is three times as big as Earth! Jupiter has a very faint ring. Jupiters tilt of axis is 3.08 degrees. Saturn Saturn is the sixth planet from the sun. Saturn is famous for it's colorful rings. Saturn's rings are made of ice, rocks, and dust. they are 270,000 km in diameter and only a few hundred meters thick. There are four main groups of rings and three more faint ring groups. Saturn's diameter is 120,660 km. It takes Saturn 29.5 Earth years to orbit the sun. Saturn has 31 moons. Saturn is made up of 97% hydogen, 3% helium, and .05% methane. About 800 Earths can fit in Saturn. Saturn's tilt of axis is 26.7 degrees. Uranus Uranus is the seventh planet from the sun. Uranus is the tilted one. The tilt in degrees is 97.9 degrees. It's surface is made up of 83% hydrogen, 15% helium, and 2% methane. Uranus has a faint set of rings. The greenish- blue you see on the planet's suface is methane gas. Uranuses diameter is 51,118 km. Uranus has 27 moons. Uranus travels on its side. one year on Uranus is 84 Earth years. More than 60 Earths can fit in Uranus. Neptune Neptune is the eighth planet from the sun. Neptune is known for The Great Dark Spot. Neptune is made up of 74% hydrogen, 25% helium, and 1% methane. Neptune's winds are ten times faster than our hurricanes. The 1,500 miles per hour winds stir up gas and create the blue color. Neptune's diameter is 49,528 km. Neptune has 13 moons. Neptune's rings are narrow and contains particles called ring arcs. One year on Neptune is 165 Earth years. Neptune's tilt of axis is 29.6 degrees. More than 60 Earth can fit in Neptune. Pluto Pluto is the ninth planet from the sun. It is also the smallest planet out of the nine planets. Pluto has never been explored. Pluto's gravity is so weak that an 85 pound kid would weigh 6 pounds. Wow! Pluto's diameter is 2,300. Pluto has one moon named Charon. Pluto sometimes crosses paths with Neptune and becomes the eighth planet for a while. One year on Pluto is 248 Earth years. Pluto's surface is methane ice astronuts think. More than 200 Plutos can fit in Earth. Plutos tilt of axis is 122.5 degrees. Well that concludes our tour of the solar system.