Comets are some of the material left over from the formation of the planets. Our entire solar system, including comets, was created by the collapse of a giant, diffuse cloud of gas and dust about 4.6 billion years ago. read more
The comet could form many tails As a comet nears the Sun, pockets of ice begin to change into gaseous form, contributing to the formation of a coma (cloud around the nucleus) and a tail. over time only if it was a solid object made up largely of ice. read more