Halley’s Comet
Halley’s Comet is a short-period comet that orbits the Sun with a period of approximately seventy-six years. It is characterized by a nucleus composed of ice and dust and by the development of a coma and tail during perihelion passages.
Halley’s Comet is discussed in astronomy, cometary science, and the study of small Solar System bodies.
Status
Halley’s Comet has been observed and recorded over multiple historical apparitions and studied through direct spacecraft encounters. Observational data are used to model its composition, activity, and long-term orbital evolution.