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Posted On: Stellar Explosion
at 11/21/2009 3:35am

Thanks for more detail.
The movement of the rocket would not distort the ring shape from a single release (the material ... more(+)

Thanks for more detail.
The movement of the rocket would not distort the ring shape from a single release (the material is now in the still atmosphere). But having 4-5 rings is a problem for my idea. There would be a time delay between each release so the center would be shifted.so the result would be a set of offset "smoke" rings. I can't recall multiple release experiments.

Still worth asking the guy of the link about any launches. If there's no launch that definitely rules that out.


In the crazy ideas department, is seeing a very high energy cosmic ray impacting the atmosphere. You's get a flash from the Cherenchov radiation, but getting the rings .... maybe induced aurora created by an electromagnetic pulse, or the cosmic ray shower. Both seem too fast to last 60 sec, and multiple rings ... no idea. close(-)

By SpaceTas
Joined: 04/10/2009

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Commented on: Giant Cannibal Galaxy's Last Meal
at 2009-11-21 02:49:40

A parallelogram is a 2D figure. The shape seen is a warped disk with a hole in the middle. Warped disks are found in ... more(+)

A parallelogram is a 2D figure. The shape seen is a warped disk with a hole in the middle. Warped disks are found in spiral galaxies including M31 = Andromeda.

Can't blame Space.com the term is used in the original ESO press release.

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By SpaceTas
Joined: 04/10/2009