Humans on other planets?

if humanity settled on other planets would those planets be under earths power and follow the government of Earth or would they be independent whats the law for this say like humans settle on mars and form a government would that government fall within earths power and be controlled by Earth or would they be... show more if humanity settled on other planets would those planets be under earths power and follow the government of Earth or would they be independent whats the law for this say like humans settle on mars and form a government would that government fall within earths power and be controlled by Earth or would they be independent also would the resources from Mars be taken back to Earth or not im just curious
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