Today, ESA and the Zooniverse launch Rosetta Zoo, a citizen science project that invites volunteers to engage in a cosmic game of "spot the difference." By browsing through pictures collected by ESA's Rosetta mission, you can help scientists figure out how a comet's surface evolves as it swings around the Sun.
source https://www.lifetechnology.com/blogs/life-technology-science-news/spot-the-difference-to-help-reveal-rosetta-image-secrets
