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A fast moving meteor lit up the night skies over most of Utah just after midnight Wednesday. KSL News has received hundreds of calls from people who saw it, from southern Utah to southern Idaho.
A quick calculation reveals that the “meteor” was more like an asteroid, measuring at least 20 meters (if made of Iron), and detonated with the force of several megatons of TNT.
Originally posted by ROBL240
The cloud is just upper atmospheric smoke left over from when the Asteroid exploded. High Level winds have just carried the trail around (much like you'd see with a contril, except the air is less denser up there so the smoke trail would still sustain itself without being blown around by oxygenated particles.)
Originally posted by OuttaHere
However, in order for this type of "contrail" to form, it had to be 70 to 80km or lower in altitude. A higher-altitude fireball "train" often looks unworldly and is composed of ionized gas. They don't last very long; a few seconds to a few minutes at best. It has to be lower to form a "contrail".
So, which is it?