iirc the solar system contained the closest planets, which is why they chose it. I don't think it matters if they want mars or earth, there's no way we would le

iirc the solar system contained the closest planets, which is why they chose it. I don't think it matters if they want mars or earth, there's no way we would let them do that (send a massive military fleet definitely just to mars). they wanted to ensure their technology remained superior by the time they arrived