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Loading contentThe largest platform for people-powered research, where hundreds of thousands of volunteers help classify and analyse data across astronomy and many other sciences. It grew out of Galaxy Zoo and now hosts dozens of projects that turn human pattern-recognition into published results.
Facts on this topic will be cited from these primary and reference sources.
Mission data, planetary science, space telescopes, and public-domain imagery.
Most NASA-produced imagery is in the public domain; individual items are checked for usage terms before publication.