There is, of course, no known and proven connection between UFOs (objects seen in, but not recognized in, the sky) and aliens. There is, in actual scientific fact, no proof that aliens even exist, let alone have the tech and poor taste to travel here.
It would depend on whether or not the aliens (if there actually were any) are hostile. There are no publicly known instances of anyone being hurt by a UFO, or of the existence of alien spacecrafts or aliens. One Unidentified Flying Object was in a sense responsible for a human death. A pilot, trying to chase what was later identified as a Skyhook balloon, went too high without oxygen, passed out, and crashed. But it wasn't the balloon that did it, it was his own carelessness in going too high when he knew that it was unsafe.
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The name of that pilot was Captain Thomas Mantell (who was with the Air National Guard and at the battle of Normandy), and FYI the Skyhook balloon theory is still highly ridiculed by many people. A pilot with 2200+ hours in the sky is NOT careless.
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It is easy to claim so, but pilots with far more experience have died of pilot error. There is simply no doubt that Mantell, who knew he had no O2 gear, flew far higher than he was supposed to without it, easily high enough to lose consciousness, and that the subsequent loss of his plane was entirely consistent with the plane lacking an effective pilot.
It is easy for some to scoff at the Skyhook balloon explanation, but not so easy for them to prove that Mantell was following something other than the balloon, which just happened to resemble in every way what such a balloon would look like. It should also be duly noted that since the incident in question was correctly identified by the other poster, the description of the event must have been accurate.
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An unidentified flying object does not necessarily mean that they are containing anything. It may just be something falling some space, such as meteoroids and other miscellaneous objects.
If an object did fall from space into our atmosphere, it would most likely burn up and never touch the surface of our planet. However, if it did get through the atmosphere, the explosion could be colossal even if the remaining mass of the object was as big as a brick.
It is best to remember that no UFO has ever been known and proven to be an alien spacecraft. It's fun to pretend otherwise, but not scientific to do so.
No one has ever been harmed directly by an unidentified flying object (which is what UFO means, not "alien spacecraft"). You hear a lot of wild tales, but the only person who ever died was a pilot chasing a weather balloon who went too high without oxygen and passed out, then crashed. I suppose you might count the woman in England who killed her grandkids in order to guarantee they would never be abducted by aliens. It worked but it is not as if the odds of it ever happening, were large enough to take such a step! Oh, and the woman whose husband drove them out in the middle of nowhere so that space aliens could come and give him money (?!). She died of hunger, thirst, and exposure, I believe. He pulled through but it was close. I guess you could say that the actual UFOs are never dangerous, but our behavior in their regard can be.
only if they drop salmon on your head
Where humans and alcohol are, UFOs will be.
There have been reports of sightings of white UFOs.
the correct answer is UFOs thanks for asking
The ones who study UFOs are called Ufologist. They study every thing about unidentified flying objects (UFOs).
UFOs can go as high as your imagination allows.
Please check the related links for information about UFOs.
Since UFOs are unidentified, it is unknown what is inside of them.
No, UFOs are not technically extinct, they are just rare to see.
People have reported sightings of UFOs in France, but there is no proof of their existence.
The African Origins of UFOs was created in 2006.
Like flying machines on Earth, UFOs are equipted with landing gear.
No.