Astronaut Quote by Michael Hesemann

For years I've been stressing with regard to UFOs that extraordinary claims require extraordinary evidence.

— Carl Sagan

Each year, thousands of UFOs are sighted and reported, which is an impressive tally of unidentified aerial phenomena. Surveys show that roughly one-third of…

— Seth Shostak

The evidence is overwhelming that Planet Earth is being visited by intelligently controlled extraterrestrial spacecraft. In other words, SOME UFOs are alien spacecraft. Most…

— Stanton T. Friedman

I'm not at liberty to discuss the governments knowledge of extraterrestrial UFO's at this time. I am still personally being briefed on the subject!

— Richard M. Nixon

I have taken special interest in these accounts [of UFOs].. I think there may be substance to some of these reports... I think we…

— Gerald R. Ford

The phenomenon of UFO doesn't say anything about the presence of intelligence in space. It just shows how rare it is here on the…

— Arthur C. Clarke

I'm skeptical of claims that we've been visited by aliens from another planet or other dimension, but I don't rule it out 100 percent.…

— Leroy Chiao

Most scientists never look at UFO evidence, which leads to their conclusion that there is no evidence...

— Bernard Haisch

In the firm belief that the American public deserves a better explanation than that thus far given by the Air Force, I strongly recommend…

— Gerald R. Ford

Among the hundreds of so-called "UFO reports" each year, a sizable fraction of those clearly observed by reputable witnesses remain unexplained-and difficult to explain…

— Richard Hall

After a lifetime in this subject, I have concluded that the extraterrestrial hypothesis is one reasonable tentative approach to putting the best-documented and most…

— Jerome Clark

The more scientists I talk to, the less I believe in UFOs.

— James Doohan