There are eight planets in our solar system our earth

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greater than 500 km. There are eight planets in our Solar System. Our Earth is the third planet away from the Sun. Mercury is the closest planet to the Sun and followed by, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. The nearest four planets (Mercury, Venus, Earth, and Mars) are called rocky planets because they have a hard rocky surface. And the other four which are cold and further planets from the Sun (Jupiter, Saturn, Uranus, and Neptune) are called a gas giant planet. These four planets are very bigger when compared with other rocky planets and their surface is composed of gas. But because there is so much pressure on these four planets so some of the gas turns into a liquid form. How the moon is formed?
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About estimated to have formed 20 planets. Earth and the cosmic body collided with the size of Mars and left debris. The debris clumped together in the way they formed the planets. Evidence from the celestial body called "Theia" and Planet was found on both Earth and Moon today. It'd explain why the rocks on the Moon are very identical to those on Earth. Most of the moon is made up of lighter elements, making it less dense than the Earth which is the substance that created it from the crust. Evidence of this Theory The evidence is Spectral evidence collected after 1945 shows that there was fairly uniform distribution across the world of the most common chemical elements, carbon, hydrogen, oxygen, nitrogen, phosphorus, iron, etc. This indicated a common origin for those elements. A number of additive phenomena hinted at an underlying development process. Lead has a smaller atomic weight than gold but is much more common than gold. Hydrogen and helium are nearly omnipresent but lithium is extremely rare and beryllium.
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