What Is A Solar System?

Nowadays we hear about "flying saucers", and people wonder if there are other worlds where some sort of living creature might exist? The reason people can even imagine such thing is that we know that our solar system is only a tiny part of the whole immense universe. And scientists believe that there are probably millions of other "solar systems" that may be similar to our own. A solar system is simply a sun and all the bodies around it that it controls by gravity. Our solar system is made up of all the planets, moons, asteroids, and comets that our sun controls by gravity. Our earth is simply one of the planets.

The planets vary greatly in size and distance from the sun. Mercury is the smallest planet and the nearest to the sun. It goes around the sun much faster than the Earth which approximately requires about a 356 days time to revolve around the world. Thus at last we can say that the Sun has its own burning energy, there are 9 planets in Solar System and all revolve around the sun.

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