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I can't imagine the size of object that formed the Valhalla crater on Callisto. The central region is 360km across, and the diameter of the entire basin is 3,80
by AaronM 6y ago
I can't imagine the size of object that formed the Valhalla crater on Callisto. The central region is 360km across, and the diameter of the entire basin is 3,800km. That's a distance on earth from LA to Arkansas!
- LeifCarrotson 6y agoAnd the whole equator of Callisto has a circumference of 15,100 km. Proportionately, that would be a basin the size of the Indian ocean!