Stellarium Web

stellarium-web.org

Visit Website

A free, browser-based planetarium that shows an accurate star map for any location on Earth at any time — past, present, or future.

Why it is useful

The browser version of the desktop Stellarium planetarium app, accurate enough for serious amateur astronomy and beautiful enough to just browse. You can travel to any location and any time to see exactly what the sky looked like — useful for understanding historical astronomy, planning observation sessions, or identifying what that bright object is tonight. No account or installation required.