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There are eight (8) planets in our solar system. Ceres is a dwarf planet, and was once considered to be a planet. It was called a planet for a longer period of time than Pluto. Eris is another dwarf planet, larger than Pluto. Sedna and possibly Quaoar are dwarf planets in our solar system.

Some versions of this question don't refer to our solar system, in which case we know of hundreds of planets, all larger than ours, orbiting other stars (well outside our solar system). We don't currently know whether any planets exist in other galaxies, but it is a safe assumption that they do, as well as that there are other planets our size around habitable stars within our own galaxy.

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7y ago

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