![]() ![]() The whole Universe has at least 100 billion galaxies in it. The Sun is just one of hundreds of billions of stars in the galaxy that we live in, which is called the Milky Way.It takes 365 days for the Earth to complete one circuit around the Sun.The Earth rotates as it orbits the Sun.The Earth is the only planet that we know has creatures living on it.The biggest planet is Jupiter, and the smallest planet is Mercury.The closest planet to the Sun is Mercury, and the farthest away is Neptune.There are eight planets that orbit around the Sun.The Sun is a star – a massive ball of hot gas that gives off light and heat. Everything in the Solar System revolves around the Sun.The Sun is even bigger than Jupiter – it would take 1.3 million planets the size of Earth to fill the same volume as the Sun. The biggest planet is Jupiter – you could fit 1,321 Earths inside Jupiter. You may think that the Earth is a pretty big place, but the Earth isn’t even the biggest planet in the Solar System. The Solar System includes the Sun, the Earth (where you are now!) and all of the other planets, asteroids and comets that go around and around it. ![]()
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