Skeptics, of course, simply point out that Mitchell is entitled to his "opinion" and that as everyone knows, there is no evidence that alien spacecraft are visiting Earth. But here's the paradox; other astronauts have made statements contradicting Mitchell. For example, in 2007, on Larry King, Buzz Aldrin said, "I just can't believe that we would be covering up such a major, significant event as true evidence of being from somewhere else." He thinks, as do most skeptics, that the UFOs reported by astronauts in space were simply debris or parts of other spacecraft. The irony is that this is also simply Aldrin's opinion, and it all depends on whom you believe.
I'll go with W.C.Fields, who once expressed: "A man's got to believe in something. I believe I'll have another drink."
Source: truth-just-ahead.blogspot.com