INDIAN GEOGRAPHY

Detailed explanation-1: -There is a slim chance that microbial life exists on Mars today, perhaps under the planet’s ice caps or in subsurface lakes detected by spacecraft like the European Space Agency’s Mars Express. Locations like these could protect life from the harsh conditions on the planet’s surface.

Detailed explanation-2: -Mars is believed to have lost its water when it lost its magnetic field around 4 billion years ago. Without an atmosphere, there was nothing to prevent Mars’ water from evaporating and then being lost to space. This radiation also made the existence of life at the surface of Mars unfeasible.

Detailed explanation-3: -Of the thousands of exoplanets – planets around other stars – confirmed by our increasingly powerful telescopes, and despite extensive probing of the solar system, ours is still the only planet known to host life.

Detailed explanation-4: -The atmosphere on Venus and Mars constitutes about 95-97% carbon dioxide. Life cannot exist in such a CO2 rich atmosphere.