Scientists have created simulators to mimic the harsh conditions on Mars, like low pressure, extreme cold, and intense UV radiation. These simulators help researchers study if life could survive on Mars and prevent contamination from Earth. The goal is to understand the possibility of finding life on Mars and the limits of Earth contamination. The simulators allow for experiments in chemistry and biology to be conducted under Martian-like conditions. Recent discoveries of water and methane on Mars have raised hopes of finding signs of life on the Red Planet.