The most frequent question is, Are there, or were there eser, the right conditions for life on Mars? Water is important because where there is water on Eart, there is Mars is a dry and dusty planet. Its temperature is much colder than Ea at an average"60 degrees Celsius. Mars's atmosphere is thinner than Earth's atid it is deadly to humans Scientists believe that Mars once had a vast ocean. They are now looking for water with spa probes, One mission in 2008 found nn ice Mars, but not liquid water.