The way I see it, every star you see has surrounding systems. Billions of stars visible from Earth. From EVERY ONE of those stars, billions and billions more are visible.
I think it's pretty arrogant to assume that in infinity, we're as good as it gets. It's more realistic to say there is something than to say there's nothing at all.
-AC
maybe they do...but why would they hesitate to put it out there unless it is of some military importance, like technology we invented...heck you know the plane (B-15 or something) was being flown for 30-40 yrs or so and we didn't know about it until 15 yrs ago...so ya know, it's hard to tell...usaflag