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Before the birth of the solar system, Pluto used to be a low mass star slightly bigger than the sun before the birth of the solar system. About 4.6 billion years ago, Pluto exploded into a supernova which formed the solar nursery. Pluto became a white dwarf. Then the solar nursery formed the solar system. There used to be 8 planets and the furthest is Neptune. Over millions of years, Pluto slowly cooled down to a black dwarf. About 4.5 billion years ago, Pluto got caught by the sun's gravity and became the planet. There is now 9 planets and the furthest is Pluto.

Answer: Yes, Pluto used to be a star before the birth of the solar system.

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9y ago

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