Curiosity landed on Mars to see if there was any life forms.
It also took samples from the rocks.
NASA is hoping to soon have Humans go to Mars.
Did they find any life forms?
Will humans be able to go on to Mars in less than the 40/35 yrs predicted?
An insight that I have is that it takes a lot of research, time, effort and money to
send rovers up to Mars to study the rocks.