Well there is 'evidence'... Photos, videos radar reports, Cattle mutilations - even apparently some human mutiliations - ugh. Of course no one knows exactly what any of it is evidence of. I've seen some excellent evidence of
something that i can't identify in the sky first hand and i have another witness to back that up. i don't know what exactly it was though and neither does my friend. Ar81 also claims to have seen something, but again he doesn't know what that was.
As we can see though, all evidence can be debunked in the eyes of the public or made up completely, no matter how real or unreal. if an alien spacecraft landed on the whitehouse lawn tomorrow and a bunch of greys popped out and said hi and few away again, there would still be people who would refuse to believe that it ever happened, just like people believe that we never went to the moon.
If that landing was broadcast on TV i'd be looking for the telltales of CGI for sure. you'd probably have a whole new field of conspiracy theories debunking the landing and saying it was a massive hoax by the government for their own sinister ends.
Yes, it is fun to speculate.
Aaaaaanyway... The NASA reps response to Kerrang's call is pretty funny. Poor guy, seems totally dumbfounded. lol.
[ame="http://www.youtube.com/watch?v=gSOSLC-U5cU&feature=related"]YouTube - Nasa Response re: Edgar Mitchell interview on Kerrang Radio[/ame]