There are any number of people who think that NASA and everything else is a Illuminati Reptilian Skull and Bones Trilateral Rothchilds Bilderberger Zionist Nazi Mafia CIA NWO Stonecutters conspiracy. So far, not one of these people has popped up with any evidence that such a conspiracy even exists, let alone is covering up aliens.
No. There is no evidence to suggest that NASA has done this. No other country has any well-documented evidence of UFOs. It is very unlikely that NASA has been able to control the evidence in all other countries.
Please check the related links for information about UFOs.
Gary McKinnon.
It is impossible to even speculate. There is no admitted proof that UFOs do exist and no hard information on propulsion.
UFOs, top secret military aircraft, top secret weapons and some believe even aliens.
There are many sites online with articles and information on UFOs; too many to list here. To get you started, I have posted the results page of articles you can read concerning UFOs below in Related Links.
That information is unknown, there are no reliable sources.
everything is story.don't trust anyone regarding in UFO's
Where humans and alcohol are, UFOs will be.
Perhaps UFOs are at the very heart of religion. A website that contains a wealth of well- documented information on this question can be found at The Bible UFO Connection website (see related link)
Hundreds of people have CLAIMED to have been abducted by UFOs, but many of the claims are obviously false and most of the rest have been of dubious veracity. There have been no positive evidence that any humans have been abducted from Earth by extra-terrestrial visitors. (But then, that's what "THEY" want us to believe!!)
the correct answer is UFOs thanks for asking