November 20, 2021
6 Facts About the Famous Halley’s Comet and When It Will Return
About every 75 to 76 years, a dazzling display lights up Earth's sky called Halley's Comet. This short-period comet is the most famous of its kind and has been regularly spotted by humanity since ancient times. The last time it reached its perihelion—the point at which a comet is closest to the sun and most visible—was in 1986.
