Roswell is a great story no doubt about that, but I think Aliens visiting the Earth from the far reaches of space in a craft made from the flimsy materials reported at the time is a bit of a stretch? Cover up there definitely was, but I'd guess it related to military weapons/intelligence testing during the height of the cold war.
It would be a buzz to think we have been visited by Aliens - it would entirely change our perspective - but to date, there is no tangible evidence of such a thing ever having occurred. Though many strange and unexplained events have been reported and witnessed even by reputable people, does that prove anything one way or the other?
