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Is There Any Evidence for Extraterrestrials Visiting Earth?

Early UFOlogists speculated that unidentified craft came from Venus or Mars, as they are the planets that are closest to Earth, however no evidence of extraterrestrials on either planet has ever been found.
No physical evidence points to visitors from space coming to Earth.
Low earth orbit is constantly being extensively monitored by powerful radar.
SETI primarily uses radio telescopes to search for extraterrestrial signals.
Article Details
  • Written By: Michael Anissimov
  • Edited By: Bronwyn Harris
  • Images By: Daevid, Pio3, Official U.s. Navy Page, Route16
  • Last Modified Date: 23 July 2014
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Since the first widely-publicized UFO (unidentified flying object) incident, in Roswell, New Mexico, on 7 July 1947, there have been thousands of UFO sightings per year. Since then, many have speculated that UFOs may be spaceships used by extraterrestrials to visit Earth. A 2006 survey found that 24.6% of Americans agree or strongly agree that at least some UFOs are spaceships from other worlds.

Working against this 24.6%, however, is an absence of physical evidence. Despite decades of eyewitness reports, including those of first-hand contact with extraterrestrials, no physical evidence has turned up. Not a single extraterrestrial machine, scrap of extraterrestrial fabric, fleck of paint, strand of extraterrestrial hair, or anything else that could be definitively put under a microscope and identified as not originating from the Earth.

Low earth orbit is constantly being extensively monitored by powerful radar and long-exposure space-based cameras. Tracking systems are capable of detecting any object larger than a golf ball. This is for the safety of those currently in space, as well as protecting against interpretations of falling space junk as enemy missiles. These space watch systems have never observed any extraterrestrial spacecraft. Astronomers, who watch the sky with high-magnification telescopes for a living, almost never observe unidentified flying objects.

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UFO sightings experience a marked jump after events that publicize other UFO sightings, such as the Roswell incident, and movies such as ET. This is similar to the "copycat" phenomenon witnessed when serial killer stories are on the national news. This data might be interpreted as an increase in the number of imagined sightings, while legitimate UFO sightings remain constant, but if so, why are there barely any stories of UFOs being sighted in America prior to World War II?

There are several cases of unusually well-corroborated UFO sightings that could represent genuine craft. Mass sightings of low-flying, silent black triangles in 1989 and 1990 in Belgium were reported by hundreds of credible witnesses, as well as tracked via NATO radar and jet interceptors. This is an intriguing case, and there are a few others. However, the vast majority of UFO reports are very unreliable, and the complete absence of physical evidence is damning. Occam's razor dictates that UFOs should be attributed to causes other than extraterrestrial visitation.

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Discuss this Article

anon205739
Post 6

Well, regarding the paintings mentioned below, and using a traditional interpretation of Occam's Razor, is it simpler/more reasonable to assume an image of an (apparent) UFO is the result of a flight of fancy (no pun intended) on the part of the artist, or that he or she must have witnessed an actual UFO? You be the judge.

However, it's worth noting that, based on what I've read, the common interpretation of OR as "all things being equal, the simplest explanation tends to be the right one" is actually misleading. The quote by William of Occam is really something more like "all things being equal, the simplest explanation is easier to analyze."

And he was referring specifically to the interpretation of scripture. So it's questionable whether or not the standard can (or should) be applied to other topics.

anon129810
Post 5

I myself saw one hovering over a neighbors house silently one winter evening in Buffalo Grove, IL. Ironically some years later I was talking to a friend who also saw the same UFO and identified which house it had hovered over - being that I had never said which house it was. They do exist. The Bible even describes them. See King James Bible.

anon108893
Post 4

Actually there may be some scientific evidence. have a look at the ufo hunters episode entitled UFO relics. There is a fragment of something a witness claims fell from a ufo. It was scientifically analysed and after initially denying what they found, scientists came forward admitting it appears both extraterrestrial and manufactured.

This is the piece of evidence which has interested me more than any other. i am dying to hear more about what this could be.

anon108247
Post 3

Doubt it. The concept of science fiction back in thousands of years of history would never have been dreamed of, never mind thought of. There out there, somewhere...

anon97285
Post 2

Ancient science fiction?

anon8415
Post 1

There is plenty of evidence, what about the old paintings that clearly show flying metal disc's in the air hundreds of years before mankind could fly.

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