Twilight phenomena

A twilight phenomenon (seen from the Louisiana-24 Long Range Tracking Telescope site in northern Santa Barbara county) lights up the night sky over Vandenberg Air Force Base following the launch of a Minuteman III missile September 19, 2002 (Official USAF Photo by Dennis Fisher, 30th Communications Squadron)

The twilight phenomenon can be seen in the wake of a Minotaur I launch vehicle during its departure from Space Launch Complex 8 at Vandenberg AFB, Calif., Sept. 22, 2005. This effect is caused by unspent fuel freezing at high altitude. The frozen particles reflect sunlight below the horizon and display different colors against a dark background. (U.S. Air Force Photo by Staff Sgt. LeeAnn Sunn-Wagner)

Twilight phenomenon is produced when unburned particles of missile or rocket propellant and water left in the vapor trail of a launch vehicle condenses, freezes and then expands in the less dense upper atmosphere. The exhaust plume, which is suspended against a dark sky is then illuminated by reflective high altitude sunlight through dispersion, which produces a spectacular, colorful effect when seen at ground level.

单词	Twilight Phenomena
释义	Twilight Phenomena 英语百科 Twilight phenomena Twilight phenomenon is produced when unburned particles of missile or rocket propellant and water left in the vapor trail of a launch vehicle condenses, freezes and then expands in the less dense upper atmosphere. The exhaust plume, which is suspended against a dark sky is then illuminated by reflective high altitude sunlight through dispersion, which produces a spectacular, colorful effect when seen at ground level.
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Twilight Phenomena

Twilight phenomena