Borelli's Comet is a periodic comet that was first observed by the Italian astronomer Giovanni Borelli in the 17th century. It is known for its bright appearance and predictable orbit, which brings it close to the Sun approximately every 75 years. The comet's path takes it through the inner solar system, where it develops a glowing coma and tail due to the sublimation of its icy nucleus. This phenomenon makes Borelli's Comet an interesting subject for both amateur and professional astronomers, as it provides insights into the composition of comets and the dynamics of our solar system.