QUOTE (nprev @ Apr 20 2014, 02:10 PM)
I take it we're talking 'late' as in no later than the end of the LHB?
I don't think that's a safe assumption. We know from the Jupiter system that evolving resonances have produced big orbital/thermal events that have reshaped three of the moons in relatively recent geological time without the need for any disruption from without. A second giant moon around Saturn creates a similarly chaotic system with the potential to generate a home-grown catastrophic event after an undefined interval of time.
QUOTE (Jason W Barnes @ Apr 20 2014, 11:37 AM)
Doug's talk at TtT^3 was very interesting -- hopefully he'll write it up soon so that others can learn of this new idea!
I would echo that in slightly different words: Hopefully he'll write it up soon
in a place where everyone can read it.