Astronomy Tools
Tools for exploring the sky, distances, and space.
Astronomy helpers to explore stars, distances, and the sky. Try the Star Life Expectancy calculator below, and check back for more tools!
Star Life Expectancy Calculator
See how long stars live—from brief blue giants to trillion-year red dwarfs. Enter a star's mass to get main sequence lifetime and final fate.
Eclipse Calculator
See how many eclipses you might see in your lifetime and when the next solar and lunar eclipses are. Plus safety tips and eclipse types.
Constellation Finder
See which constellations are visible by date and latitude. Learn the 88 constellations, seasonal visibility, and the myths behind the stars.
Meteor Shower Predictor
Find the next meteor showers, peak dates, and ZHR. Simple viewing tips and when to look.
ISS Tracker & Spotter
When the ISS passes over you. Get pass times for your location and simple spotting tips.
More tools coming soon
Distance converters, phase of the Moon, and other astronomy tools are on the way!