The Orionid meteor shower is set to grace Pittsburgh’s sky on overnight Monday into Tuesday.

The Orionids, which peak annually during mid-October, are considered to be “one of the most beautiful showers of the year,” according to NASA.

The fast-moving meteors leave glowing trails of light, lasting several seconds to minutes.

Here’s what to know and where to watch.

What are the Orionids?

The light “trains” that skygazers can see from Earth come from debris in the meteors’ wake, according to NASA. The meteors travel at about 41 miles per second into Earth's atmosphere and can even become fireballs, depending on their speed.

Meteor showers occur when Earth passes through showers of debris that comets and asteroids leave behind. For the Orionids, those bits of cosmic dust come from Hall

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