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Originally posted by draknoir2
I'm going to say that it's the shadow of the exhaust plume on an adjacent cloud.
I think I may have to agree with the shadow option. The exhaust seems to me lit from the bottom (not sure how that happens, but I dont know what angle the film was shot at). The "shadow" see to cut across the cloud at about the same rate the missile is traveling. Not enough info to say defintivly though.
Originally posted by john124
Well done to the Sun for another barf up about UFOs. Next time they'll show Venus again.
Originally posted by skibtz
If the shadow in the cloud theory is correct then we have learned a valuable lesson. I was not aware that a shadow could be created like that but now I, and some others, know that it is possible.
Originally posted by JimOberg
This effect is occasionally seen during shuttle launches through a low cloud layer. It really is bizarre.
You can also see the shadow of a rocket's exhaust plume extending across the ground with a backward-pointing rocketcam view. That's also pretty cool.
Figuring these strange sights out does really need understanding of illumination and shadowing conditions -- the kind of information withheld by the folks who post 'space shuttle videos' on youtube. Now we know why.
Originally posted by Medieval1028
Here's a link to video and screen captures with explanation: