SOLAR SYSTEM

Detailed explanation-1: -Comets are frozen leftovers from the formation of the solar system composed of dust, rock, and ices. They range from a few miles to tens of miles wide, but as they orbit closer to the Sun, they heat up and spew gases and dust into a glowing head that can be larger than a planet.

Detailed explanation-2: -Comets have been called “dirty snowballs.” They are small celestial objects, made of ice, gas, dust, and a small amount of organic material, that orbit our Sun.

Detailed explanation-3: -The rocky material that formed Earth in the first place contained some water. But that probably doesn’t account for all the water. Comets are mostly water ice.

Detailed explanation-4: -Comet Halley makes a complete orbit around the sun (a year in this comet’s time) in 76 Earth years. Comets are cosmic snowballs of frozen gases, rock and dust.