Comment by Fred34

I really doubt that humanity will make trip to earth from mars in the next 50 years. It already takes a huge amount of fuel to land on Mars -- its not economical to launch enough fuel for a return trip (even if some of the fuel could stay in orbit like with the moon landings). Much better idea to find the few people that are fine living and dying on mars. Humanity has not returned a single sample from mars even though we've been landing spacecraft on mars for 50 years.