What is a Planet?|⚛

People have known what a planet is since prehistory. The word itself means wanderer. This is because unlike stars the planets move around in the sky. At first there were six known, including earth. With the invention of telescopes that jumped to seven, eight, nine, ten, dozens, then eight again, then nine, then eight yet again. It seems we can't get our definition of a planet straight! So, what is a planet really? Let me explain!Show more

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