In recent years, strange appearances have been reported in the skies
around the world. Yes, sometimes, 'ghost towns' appear in the sky.
Witnesses remain baffled even for years... Some are even terrified by
these spectacular sightings. But what are these strange shadows in the
sky?
According to the scientists, these ghost cities that appear floating
among the dense fog are mirages, or a naturally occurring optical
phenomenon in which light rays bend to produce a displaced image of
distant objects or the sky.
In contrast to a hallucination, a mirage is a real optical phenomenon
that can be captured on camera, since light rays are actually refracted
to form the false image at the observer's location. What the image
appears to represent, however, is determined by the interpretive
faculties of the human mind.
