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What exists, and how to get in.

Galaxy Zoo

Galaxies, made up of billions of stars like our Sun, are the beacons that light up the structure of even the most distant regions in space. Not all galaxies are alike, however. They come in very different shapes and have very different properties; they may be large or small, old or young, red or blue, regular or confused, luminous or faint, dusty or gas-poor, rotating or static, round or disky, and they live either in splendid isolation or in clusters. In other words, the universe contains a very colourful and diverse zoo of galaxies. For almost a century, astronomers have been discussing how galaxies should be classified and how they relate to each other in an attempt to attack the big que…

Getting access

Open access Open

How to apply
Not yet verified — we don’t publish a route we haven’t checked.

Summarised from a registry — the exact application route is not yet verified.

Registration required Restricted (registration)

How to apply
Not yet verified — we don’t publish a route we haven’t checked.

Summarised from a registry — the exact application route is not yet verified.

About this database

Websitehttps://www.zooniverse.org/projects/zookeeper/galaxy-zoo/
SubjectsNatural Sciences · Physics · Astrophysics and Astronomy
Last updated2026-09-12

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