The tail of a comet typically appears to become longer as it gets closer to the Sun. This is because as a comet approaches the Sun, the intense heat causes the frozen gases and dust particles in its nucleus to vaporize and release gas and dust into space. The solar wind, a stream of charged particles emitted by the Sun, then pushes these released materials away from the comet, creating a glowing, elongated tail that can stretch for millions of kilometers behind it. Therefore, the tail becomes longer as the comet's distance from the Sun decreases.
