The solar system is the planetary system that we live on, comprising of the sun, eight planets and many minor planets, asteroids and comets. The solar system began around four and a half billion years ago, when a nebula called the solar nebula formed. The solar system is one of billions of planetary systems in the milky way galaxy. The sun is the main engine of the solar system is an average made sequence star, the sun is 93 million miles away from earth and one astronomical unit or au. The sun makes up 99 of the mass of the solar system and is made up of mostly hydrogen and helium. The planets are divided into three categories: terrestrial gas giants and einsteins. The terrestrial plans include mercury, venus, our own earth and mars. The gas giants include jupiter and saturn, and ice shines include uranus and neptune. Mercury is the smallest planet. In the solar system, mercury takes only 88 days to complete one orbit around the sun at day. Mercury is boiling hot well at night it is freezing cold. Mercury does not have a moon venus. Is the brightest and hottest planet in the solar system, its pressure is 93 times greater than on earth, and the atmosphere is mostly carbon dioxide. Venus has an added control greenhouse effect, which means it does not cool below 818 degrees. Fahrenheit venus does not have a moon. Earth is the only planet in the solar system where the temperatures are stable enough for liquid water.

This is the planet where humanity and life lives on earth. Has one moon simply called the moon? It helps with the earth’s tides and is the only other object in the solar system where humans have landed on mars is known as the red planet. Its atmosphere is very thin. One of its volcanoes olympus mons is the largest in the solar system. It also has the deepest and widest canyon. Marine valley, mars, is the most explored of the planets out of the earth. Mars has two small moons named phobos and demos. Jupiter is the biggest planet in this solar system and consists mainly of hydrogen and helium. Its most famous feature, the great red spot, is almost as big as two earths. Jupiter has 79 moons, including the galilean moons io, europa and ganymede. The biggest moon in the solar system and callisto and saturn is second biggest planet in the solar system and it’s. Most famous for a system of rings, it’s also the least dense planet. If he had a bowl of water, big enough saturn would float in it. Saturn has 82 moons, including titan. The only moon in the solar system with a major atmosphere. Uranus is the third biggest planet in the solar system. Unlike the seven other planets uranus is tilted sideways. It is the first planet that was not discovered in ancient times. Uranus has second coldest average temperature in the solar system. Uranus has 27 moons. Neptune is the farthest planet in the solar system, and it also has the coldest average temperature it is notable for having the fastest wind in the solar system up to speeds of at least 700 miles an hour.

Neptune has 14 moons, including triton, the only large moon to have a retrograde orbit. The planets are not the only things that other than the sun in the solar system, though the other objects are called asteroids, comets, meteors and minor planets. The belt between mars and jupiter is known as the asteroid belt and is home to countless millions of asteroids. The belt beyond neptune is known, as the kuiper belt is home to many icy objects, including pluto, which used to be a planet until 2006.. Beyond the kuiper belt is the orc cloud which it is home to billions of comets.