Mars as "Earth sister"

Lets pretend that Mars was a bit larger, so the gravity could hold on to the water and possible atmosphere, and then play along with the accidents that happened on earth happened at a similar tact.

Somewhere between when the telescopes appears and now we gaze at mars and see people just as us looking back.

What changes and impacts on space-faring would that make? The drive to meet those other people there.

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Mars as "Earth sister"

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