Facts about the 'Dirty Snowballs' of space.

Comets are icy bodies of frozen gases, rocks and dust left over from the formation of the solar system about 4.6 billion years ago. They orbit the sun in highly elliptical orbits that can take hundreds of thousands of years to complete.

As a comet approaches the sun, it heats up very quickly causing solid ice to turn directly into gas via a process called sublimation. The gas contains water vapor, carbon monoxide, carbon dioxide and other trace substances, and is eventually swept into the distinctive comet tail.

So today we have brought this video for you...