Alberto Monteiro wrote:
Charlie Bell wrote:
IIRC, Phobos is falling and Deimos is leaving Mars.
...and our moon is leaving too.
No, it's not. If the Sun didn't explode [*], the Earth-Moon
system would stabilize in two tidal-locked bodies.
Alberto--
I'd go with "doesn't", but that does make it seem
like not "exploding" is a possibility.
As for why we don't see moons with submoons, it may
just be hard for moons to capture submoons. It must
require a pretty close match of trajectories.
---David
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