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Galaxy Map
Explore a procedurally generated galaxy. Discover star systems, planets, and rare cosmic phenomena.
The Milky Way contains an estimated 100–400 billion stars, with at least one planet orbiting each star on average.
Explore a procedurally generated galaxy. Discover star systems, planets, and rare cosmic phenomena.
The Milky Way contains an estimated 100–400 billion stars, with at least one planet orbiting each star on average.
Galaxy Map is a free, browser-based space exploration experience that lets you navigate a procedurally generated spiral galaxy. Every day, a new galaxy is seeded so that all visitors explore the same cosmic terrain. Pan across thousands of stars, zoom into regions of interest, and click individual stars to reveal detailed planetary systems — complete with temperature readings, gravity measurements, and habitability scores.
The galaxy is generated using a deterministic pseudo-random algorithm seeded by today's date. Stars are distributed along spiral arms with varying densities, and each star is assigned a spectral type — from blazing blue O-type giants to dim red M-type dwarfs. When you zoom close enough to click a star, its planetary system is generated on the fly: rocky worlds, gas giants, ice planets, desert landscapes, and rare ocean worlds, each with unique physical properties.
Special phenomena are hidden throughout: binary star systems locked in gravitational dance, glowing nebula regions where new stars are born, and black holes with dramatic gravitational lensing effects. Your discovery log tracks everything you find.
Last updated March 2026.