i see that the planet is rotating.
I assume the ring rotates too,
so as the rock goes through the ring,
it should leave a wake or trail in the ring.
perhaps you could add a media element attached to the
asteroid that interacts with the media in the ring object
downstream to create the effect.  Is that how you made the
glow?  I really like how the leading edge glows bright.
I imagine a particle method would
work best for accurately simulating the ring,
 but that would take years to render.
Looks very slick anyhow.
_______________________
Eric Andersen
eri### [at] zerotensororg
http://zerotensor.org/
_______________________

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