Orionid Meteor Shower Begins As Earth Crosses Halley's Comet Path

UPDATE - follow-up to How to see the Orionid meteor shower from Friday: The Orionid meteor shower is now active until 7 November, offering fast meteors that enter the atmosphere at around 41 miles per second. The display happens because Earth passes through dust and debris left by Halley's Comet, which takes roughly 76 years to orbit the Sun and was last seen in 1986. These tiny particles heat up upon entering the atmosphere to create bright streaks of light that leave glowing trails lasting a few seconds.

Viewing Details

The shower peaks overnight from 21 to 22 October, producing around 10 to 20 meteors each hour under ideal conditions. Viewers do not need binoculars or a telescope, but should spend 15 to 20 minutes letting their eyes adjust in a dark spot away from street lights. While the meteors seem to radiate from the constellation of Orion, they can appear anywhere across the night sky. Viewing prospects on Friday evening are mixed, with clear spells in southern and eastern parts of England, while Wales, the Midlands, and Northern England face a slow-moving weather front with cloud and rain. Scotland and Northern Ireland will see clear periods mixed with patchy cloud and a few showers. Additionally, a moon building toward its full phase on 26 October may make fainter meteors harder to spot at the peak. Halley's Comet will not return to view until 2061, but Earth hits its debris twice a year, causing the Eta Aquariid shower in May alongside the Orionids.

Context

Meteor showers provide a reliable annual spectacle as Earth repeatedly intersects old comet orbits. Stargazers often find that simple patience and dark skies matter far more than expensive equipment when tracking natural light displays.