Galaxy Zoo

by ZooniverseUnknown

Galaxy Zoo

Galaxy Zoo is now arguably the world’s best-known online citizen science project, and is certainly the one with the largest number of publications based on citizen scientists input. Our success inspired the creation of The Zooniverse, hosting project using the same technique across many research areas. It all started back in July 2007, with a data set made up of a million galaxies imaged by the Sloan Digital Sky Survey, who still provide some of the images in the site today. With so many galaxies, we assumed it would take years for visitors to the site to work through them all, but within 24 hours of launch we were stunned to be receiving almost 70,000 classifications an hour. In the end, more than 50 million classifications were received by the project during its first year, contributed by more than 150,000 people. That meant that many different participants saw each galaxy. This is deliberate; having multiple independent classifications of the same object is important, as it allows us to assess how reliable our results are. For example, for projects where we may only need a few thousand galaxies but want to be sure they're all spirals before using up valuable telescope time on them, there's no problem — we can just use those that 100% of classifiers agree are spiral. For other projects, we may need to look at the properties of hundreds of thousands of galaxies, and can use those that a majority say are spiral.

Dataset Attributes

Label SVG
TasksClassification
Label SVG
CategoriesGalaxies, Stars, Space
Label SVG
SensorRGB Camera

Class Labels

THIS ISNT REALLY RELATED TO CV/ML