Well, yes much research has been done on the UFo phenomena, however there is still no evidence to suggest that aliens are visiting earth and mostly of what we see could be Military. LockHeed Martin for example has been testing many UAV's over the latter few years and to be honest I think most of what we see could be such craft, however I saw something a few weeks back through my attick window and I have not ever seen the like before or since.
An elongated object hovered a way off from my home high in the sky, it was there stationary long enough for me to get a camera from downstairs come back, take a few shots, then, it moved forward slightly, very slowly, turned into a red ball and vanished. No clouds well lit sky, I mean, what the hell is going on.
The last time I had a significant sighting was many years ago, but it wasnt like this.