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Planetary Society Advent Calendar for December 24: Ganymede

Emily Lakdawalla • December 24, 2009

I think if you polled most space fans about their favorite moons of Jupiter, Ganymede would come in a consistent third behind Europa and Io. It's just not fair.

Four hundred and fourteen years since Galileo

Emily Lakdawalla • December 07, 2009

Galileo, the scientist, discovered the Galilean satellites of Jupiter four hundred years ago next month, while Galileo, the mission, arrived at Jupiter to study those moons in situ fourteen years ago Sunday.

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