Recently there was an
astonishing report from China. According to the Daily Mail,
“thousands of people in China claim they have seen a floating city
in the sky.” There is even a video that shows this strange event.
It wasn't too long before
skeptics attempted to debunk this sighting, trying to explain it as
something natural and understandable. This Daily Mail story had the
headline “Sightings of a 'floating city' in China are simply an
optical illusion, say scientists.” The story then suggested
that the sighting was an example of an optical illusion called Fata
Morgana. A Fata Morgana is a rather complex form of mirage.
Is this explanation a
credible hypothesis to explain the reported sighting? No, it isn't.
The explanation is completely unbelievable, for
some reasons I will now explain.
A Fata Morgana is a mirage
that appears on the horizon, as mentioned in the first sentence of
the wikipedia.org article on the topic: “A Fata
Morgana is an unusual and complex form of superior mirage that
is seen in a narrow band right above the horizon.” But the video
does not show a floating city on the horizon. It shows what looks
like a city floating quite far above the horizon. If you fast forward to the 55th second of the video above, you will see the image below. It is something that occupies a large fraction of the viewing area, and is far above the horizon.
Another reason why the
Fata Morgana explanation does not work is that when one sees a Fata
Morgana or any type of mirage, it only appears as a relatively tiny
part of your viewing area. You may see a mirage that looks like an object
that is one percent of the viewing area in front of you, but no one
ever reports a mirage that appears as a large fraction of their
viewing area. For example, someone walking in the desert may see a
mirage that looks like a distant oasis, but he will never see a mirage
that looks like a huge ocean ahead of him. But the video of the sighting
shows a huge “floating city” that is a large fraction of the
viewing area. In fact, the buildings of the "floating city" look 10 times taller than any of the buildings on the horizon, which is not at all what one sees in a mirage or Fata Morgana (which may mirror something on the horizon, but never make it look many times bigger).
Another reason for
rejecting the Fata Morgana explanation is that the “floating city”
looks like a set of buildings as you would see them looking up at
them from the ground, with the buildings towering above you. But the
video was taken from a high location way above the ground; and if
some distant buildings were somehow to be reflected up in the sky
through some Fata Morgana effect, we would not see the buildings from
such a “towering above you” angle. You would instead see them
looking as distant buildings might look if you viewed them from a
high window of an apartment building.
There is no known natural
effect that can explain seeing large floating cities well above the
horizon. Hilariously, the Daily Mail article claims that floating
cities in the sky are a “relatively common occurrence,” which
simply isn't true.
What explanations can we
give for this sighting? One possibility is that the video is just a
fraud. But that doesn't explain the reported fact that thousands of
people witnessed the sighting. (Of course, it's always possible that both the video and the news story are frauds.)
The
Daily Mail article does mention some weird conspiracy theory called
Project Blue Beam, involving the idea that “Nasa will someday
simulate an alien invasion of Earth or second coming of Christ
through holograms.” That, of course, is nonsense. I think that it
has been included in the article so that skeptics can say, “Why of
course we should believe in the sensible idea of a mirage rather than
the absurd idea of some weird NASA conspiracy to project holograms.”
I've seen this countless times – when you want people to pay no
attention to some paranormal-seeming phenomenon, always suggest the
most ridiculous paranormal explanation you can think of, so people
will prefer your natural explanation, no matter how untenable your
natural explanation is.
I can think of a more
intelligent idea, which is simply that some mysterious unknown
intelligence is trying to gradually make its presence known to us, by
a series of signs that are growing more dramatic in number and more
spectacular as time goes on. Such an intelligence might be divine,
extraterrestrial, spiritual, extra-dimensional or angelic. Using such
a theory, we might explain several different phenomena, including
crop circles, inexplicable objects photographed on Mars, various types of UFOs, and some other bizarre
phenomena. Of course, it's quite a conceptual leap to suggest such
an idea, but when “thousands of people” start reporting a city
floating in the sky, we should not necessarily be conservative in
trying to explain things.
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