SOLAR SYSTEM

Detailed explanation-1: -If a big comet hit the Earth, it would cause great devastation. It might cause huge tidal waves and fires and put so much dust and soot in the air that most of the sunlight would be blocked, and plants would die and animals would have nothing to eat. Such events are very rare, however.

Detailed explanation-2: -They probably formed from the protoplanetary disk that surrounded the Sun but never had enough mass to form into the roughly spherical shape required to be considered a planet. Despite thousands having been discovered, their total collective mass is still far less than the mass of the Earth.

Detailed explanation-3: -Although asteroids orbit the Sun like planets, they are much smaller than planets. Asteroids are small, rocky objects that orbit the sun. Although asteroids orbit the sun like planets, they are much smaller than planets. There are lots of asteroids in our solar system.

Detailed explanation-4: -NASA scientists say it would take an asteroid 60 miles (96 kilometers) wide to totally wipe out life on Earth. Asteroid Didymos (bottom left) and its moonlet, Dimorphos are seen less than three minutes before NASA’s DART spacecraft made impact. This is the last image to include a complete view of both asteroids.