SOLAR SYSTEM

Detailed explanation-1: -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-2: -A: Earth is considered to be in area known as the “Goldilocks Zone” around our Sun. It is just the right distance away from our Sun to allow just the right amount of air, water and heat to support life.

Detailed explanation-3: -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-4: -While Earth is only the fifth largest planet in the solar system, it is the only world in our solar system with liquid water on the surface.