Mars

Question 1

factors that make mars surface uninhabitable

Answer 1

-no liquid water
-high UV (can escape below the surface)
-ionizing radiation
-oxidants in the soil perchlorate
-no pH limits life

-all requirements seem to have been met

Question 2

why did mars lose surface liquid water?

Answer 2

-atmospheric loss (weak gravity and lack of magnetic field, sputtering by the solar wind)
-pressure drop
-cooling climate

Question 3

How do we know mars meteorites come from mars?

Answer 3

composition of gases in the meteorites matches mars

Question 4

evidence for life in martian meteorites

Answer 4

shapes that look like microbes
PAHs

These things can occur without life

Question 5

what is a mars analog environement + usefulness?

Answer 5

Mars analog environments are Earth locations that mimic Martian conditions

Usefulness: They help test instruments, life-detection experiments, and survival strategies for Mars missions.

Question 6

main concepts for human exploration

Answer 6

a rover for mining
environmental monitoring networks underground