It will be a while before you can see it for yourself, however. Halley’s comet was last visible from Earth in 1986, meaning we won’t have a chance to see it again until 2061. The comet is expected to appear in our skies around mid-June that year, Space.com reports, and remain visible into August.

Comets Lemmon and SWAN are soaring past Earth in a rare cosmic treat. Here's best viewing times, tips and more in Pennsylvania and Delaware.

The Orionid meteor shower peaks during a new moon, Comet Lemmon gets closest to Earth and a crescent moon slides past Mercury and Mars.

Short-period comets get close to the sun much more often than their long-period kin, and every time they do, they deplete more of their gas and dust. Consequently, they don’t typically emit as much reflective material per orbit, so they don’t get as bright.

The Orionid meteor shower peaked last night. If you missed the show, don’t fret — another spectacle is on its way: Comet Lemmon’s peak.

The Orionid meteor shower peaks Oct. 21-22 with up to 20 meteors per hour. Comet Lemmon and Comet SWAN R2 may also glow green after sunset, making this a rare skywatch.