Multiple choice general knowledge science & technology Halley's Comet takes how may years to revolve in solar system? 70 72 76 78 Reveal answer Fill a bubble to check yourself C Correct answer Explanation Halley's Comet is a short-period comet that orbits the Sun approximately every 76 years. This periodicity makes it visible from Earth roughly every 76 years, with its last appearance in 1986 and the next expected around 2061.