How is tail of comet formed?

The tail of a comet is formed when the comet approaches the Sun and heats up, causing the ice and volatile materials within it to vaporize. This process releases gas and dust, which are then pushed away from the comet's nucleus by the solar wind and radiation pressure from the Sun. The tail typically has two components: a dust tail, which is curved and follows the comet's orbit, and an ion tail, which is straight and points directly away from the Sun. As a result, the tail always faces away from the Sun, regardless of the comet's direction of travel.