Free alerts before meteor showers, ISS passes, eclipses, auroras, and more — personalized to your exact location.
Three steps. Under 30 seconds.
Just your address to get started — takes 5 seconds.
Pick from 8 sky event types and share your location so we know what's visible from your sky.
We email you 15–30 minutes before each event with exactly what to look for, where, and when.
A focused notification with everything you need — nothing you don't.