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The solar system (1 What is the solar system ?, 2 basic information about…
The solar system (1 What is the solar system ? , 2 basic information about the solar system , The solar system includes the sun and the objects that orbit around it , The solar system was form around 4.6 billions years ago, There are 8 planets , there are the 4 inner planets which are Mercury , Venus , Earth and , Mars, The inner planets are also known as terrestrial planets which are mostly made up of rocks and usually smaller, On the other hand there are the outer planets which are also known as gas giants which are usually from hydrogen helium and other gasses ., 3 more about the solar system , In 2008 they discovered about the dwarf planets such as Pluto , Ceres {cee-reez } , Eris {eer-is} , Makemake {maki –maki } , and Haumea {ham-ia } .
There is also an asteroids belt that lies between the orbits of mars and Jupiter
The sun contains 99 .86 percent of the solar system known mass . While Jupiter and Saturn making up the rest , and the inner planets
Which are mercury , Venus earth and mars make up a small amount of the solar
system known mass . , 4 asteroid belt , An asteroid is a small rocky body orbiting the sun.
The asteroid belt is a region of space between the orbits of Mars and Jupiter where most of the asteroids in our Solar System are found orbiting the Sun. The asteroid belt probably contains millions of asteroids. Astronomers think that the asteroid belt is made up of material that was never able to form into a planet, or of the remains of a planet which broke apart a very long time ago. The asteroids in the asteroid belt come in a variety of sizes. Some are very small (less than a mile across), while others are quite large. The largest asteroid is called Ceres. It is about one-quarter the size of our moon. It is a dwarf planet., 5 who discovered the solar system , the one who discovered the solar system is Galileo Galilei was the first to discover physical details about the individual bodies of the Solar System. He discovered that the Moon was cratered, that the Sun was marked with sunspots, and that Jupiter had four satellites in orbit around it., The solar system formed out of giant ,swirling cloud of gas , with collapsed under its own gravity . During the collapse , the gas heated up , started to rotate faster in an orderly manner . This led to the formation of a hot rotating gas , with the mass concentrated at the centre .Which became the Sun , and all the planets formed out of remaining disk . The gas in the disk couldn’t collapse by itself to form the planets so it needed some seeds which gravity can pull out .6 , 6 how is the solar system discovered , 7 questions about the lesson , How was the moon created ?, Answer : the moon and earth were formed at the same time. Earth was forming many chunks of rocks and icy material . A big chunk hit the new earth and loose a big piece , which became the moon, Why does the moon change its shape ?, Answer : the dark part is in shadow , like night on earth . Now the moon goes around the earth every 29 days, 8 galaxy , what is a galaxy ?, We live on a planet called Earth that is part of our solar system. But where is our solar system? It’s a small part of the Milky Way Galaxy.
A galaxy is a huge collection of gas, dust, and billions of stars and their solar systems. A galaxy is held together by gravity. Our galaxy, the Milky Way, also has a supermassive black hole in the middle.)