What's remarkable about your intuition is that the event was precisely a strange flash! It adds credence to your first instinct and makes me more confident that I did not mistake some other phenomenon for a CE.<br /><br />It was a flash in the northern sky, at about 1am on a crystaline night. It lasted about 1/3 of a second, grew to about the size of the limb of the moon, though about thrice as bright, and disappeared instantly.<br /><br />I theorized it to be one of three things: a physiological phenomenon in my own body (eyes, brain); an aircraft disaster; or a CE.<br /><br />Given that I snapped my head at the first registration of the flash, and the flash did not track with my head movement, but, instead, held its position relative to me in the sky, I ruled out physiology. The seeing of "stars," optic nerve feedback, and those little, glowing "spermatoza" you might see with a loss of blood to the eye, all track with the eye when it moves.<br /><br />Since the flash was so bright, I thought it could not be an aircraft exploding. If it were, it would either have to have been carrying extremely volitile fuel (i.e., hydrogen), in which case it might have been up to 20 miles distant; or it would have to have been closer, and for some strange reason not given report or decayed into a shower of debris. In fact, what struck me most about the event was the decay. The flash, lasting about 1/3 of a second, was very slow compared to the decay, which was almost instantaneous. Since my head moved, persistence of vision had little effect on my eye; I suffered almost no visual latency. But the flash consumed itself from full brightness to utter dispersal in some 1/20th of a second. Also, the flash was perfectly white. It seemed that a terrestrial explosion would most certainly have had a color of orange to blue.<br /><br />That left only a Cosmological Event. I suspected, perhaps, a nova or something similar. But the perfect symetry of the orb, it's silent, aggressive growth,