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Deep dives into astronomy, space exploration, and the cosmos
Star charts, planet trackers, moon phase calendars, telescope calculators, and more. Built for stargazers, students, and space enthusiasts.
Browse All Tools →Calculate, track, and explore celestial objects and events
Find the current moon phase and illumination for any date
See where planets are in the sky right now from your location
Calculate how far stars are using parallax and luminosity
Determine true field of view and magnification power
Find upcoming solar eclipses and visibility from your location
Check sky darkness and best stargazing spots near you
Deep dives into astronomy, space exploration, and the cosmos
Everything you need for your stargazing journey
All tools and resources are free to use. No account needed.
Use any tool from your phone during nighttime observing sessions.
Calculations use real astronomical data and formulas.
New tools and articles added as space exploration advances.