A deep dive into the four Galilean moons of Jupiter: Io, Europa, Ganymede and Callisto. Astrum merch now available! Apparel: Metal Posters: SUBSCRIBE for more videos about our other planets. Subscribe! Facebook! Twitter! Astrum Spanish: Astrum Portuguese: Donate! Patreon: Ethereum Wallet: 0x5F8cf793962ae8Df4Cba017E7A6159a104744038 Become a Patron today and support my channel! Donate link above. I can't do it without you. Thanks to those who have supported so far! Image Credits: NASA/ESA Music Credit: Marek Poledna 0:00 Introduction 1:07 Io 13:01 Europa 24:18 Ganymede 34:05 Callisto
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