A double meteor shower peak will occur this week — but sky-gazers might have a difficult time catching a glimpse of the cosmic activity.

The Alpha Capricornids are active from early July to mid-August, and the Southern Delta Aquariids are active from mid-July to mid-August, but both are expected to reach their peaks — the point at which Earth will pass through the densest part of the shower — Thursday night into Friday, according to the American Meteor Society.

A third meteor shower, the Perseids, will also be active this week, though it won’t peak until mid-August.