The Earthball is a fantastic tool for discussing our planet with children, combining playtime with education!

Cecilia Scorza, EU-UNAWE Germany

Growth of the Coma Colossus

This picture shows the very large, very distant and very gassy Coma Cluster. It's a giant cluster of over 1000 galaxies that are all bound together by gravity—one of the biggest structures in the entire Universe.


NASA/CXC/MPE/J.Sanders et al/SDSS



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