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Originally posted by ben94gt
no offense, but those two pics dont really look the same, you can tell that your link is a rocket launch, the exhaust trail is easily distinguishable. This does not look like rocket exhaust, and this obviously is not right after sunset.
Finally, once in a great while ("a small number out of more than 1,700 missiles" according to Vandenberg Air Force Base), an extra added bonus of a "twilight phenomenon" occurs. This spectacular event features the colors of the rainbow (specifically, green, blue, white and rose-colors) emanating from the top of the contrail. It is created when unburned missile propellant and water freezes in the upper atmosphere, and those frozen crystals are illuminated at the right angle by the sun, which must be below the horizon by 30-60 minutes of time.
A circumhorizontal arc or circumhorizon arc (CHA), also known as a fire rainbow, is a halo or an optical phenomenon similar in appearance to a horizontal rainbow, but in contrast caused by the refraction of light through the ice crystals in cirrus clouds.