FastSaying
The destruction and accumulation of moons and rings is very exciting. It's showing how this system is very rapidly evolving and showing that the processes which led to the formation of the planets (are) still ongoing today.
Jack Lissauer
Destruction
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Long-term changes to the system include collisions and crossing ring systems.
— Jack Lissauer
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Moons appear and disappear; rings appear and disappear.
— Jack Lissauer
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We don't think that is at all coincidental.
— Jack Lissauer
This appears to be a random or chaotic process, where there is a continual exchange of energy and angular momentum between the moons.
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Now we're realizing that planetary systems are continually evolving. They change at a slower rate as they get older, but they continue to change.
— Jack Lissauer
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