A meteor shower expected to light up the sky on Friday will be the last one of the decade, astronomers says.

The Geminid meteor shower happens every year when the 3200 Phaethon asteroid passes by the sun, leaving a trail of space dust that Earth passes through.

NASA officials call the event “one of the best and most reliable annual meteor showers.” While the meteor shower could be visible all week, it’s expected to peak Friday night through Saturday morning, according to the American Meteor Society.

For best viewing, the AMS recommends giving your eyes 30 minutes to adjust to darkness before gazing upward. “Most of the meteors you will see under such conditions will be bright, they will be more colorful and impressive than usual,” the society reports.

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