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Think of the comet as a boat propeller, the water churn up close is the coma, a few meters back and the streamers are in the vortex created. Then as the boat moves along the wake is like the dust fan tail that are seem on the big dust comets like panstarrs as seen in Stereo images. A slalom water skier on a turn is also another good dust tail analogue.
Kind regards, Alan
...waiting for the sky to darken, looks clear here tonight..
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