Bill Diamond, chief executive officer of the American non-profit scientific research organization - the SETI Institute - said that rumors about the presence of alien technologies in the US government do not stand up to criticism.
At the same time, Diamond noted that the possibility that alien civilizations still exist and that we will receive evidence of this cannot be completely excluded.
The director of an institute dedicated to the search for extraterrestrial intelligence believes that any extraterrestrial civilization that could travel between star systems would have technology so advanced compared to Earth's that it would be beyond human understanding.
Most likely, if aliens decided to visit Earth, they would send a robotic probe here, not a ship with living creatures. Thus, Diamond alluded to the famous Roswell incident in 1947, where, according to conspiracy theorists, an alien ship crashed.