whatilearned
Read more: https://lco.global/spacebook/solar-system/planets-and-how-they-formed/
TIL the inner planets of the solar system are made of rocky planets while the outer planets are made of gas is due to the high temperatures made only elements with high melting points stay closer to the sun. The other elements are vaporized and blasted further away where it is cooler.
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We also changed the definition of ‘planet’ so we could kick Pluto out of the club to make this delineation.