SOLAR SYSTEM

Detailed explanation-1: -To date, no proof of past or present life has been found on Mars. Cumulative evidence suggests that during the ancient Noachian time period, the surface environment of Mars had liquid water and may have been habitable for microorganisms, but habitable conditions do not necessarily indicate life.

Detailed explanation-2: -Mars has evidence of being warmer in the past and of having stable liquid surface water for potentially hundreds of thousands of years. So, it’s possible that in Mars’ past there was a time where life could have evolved in that particular environment.

Detailed explanation-3: -The martian atmosphere has a surface pressure of less than 0.01 bar and is 95% CO2. It has dust clouds, water clouds, and carbon dioxide (dry ice) clouds. Liquid water on the surface is not possible today, but there is subsurface permafrost at high latitudes.

Detailed explanation-4: -NASA’s Curiosity rover recently spotted some of the most compelling evidence yet of ancient water on Mars, in the form of rippled rocks shaped by waves. The ripples formed billions of years ago, when liquid water still covered the Martian surface.