Welcome to Gaia! ::

...yes still living and evolving!!! Is that why everyone is crazier and crazier?? rofl rofl

I think UFOs/Aliens exist... It is strange how most "people" who have seen them describe them like they are drawn (even on Gaia). I had a coworker that was a teenager in the midwest and he had this L shaped scar on his hand. He said that one night he was sitting in the bleachers of his High School smoking and he and his friend saw a UFO - so they started flashing their lighters at it... Then he doesn't really remember what happened and seemed to lose a few hours of "time" - that's when that scar appeared on him... ??? He didn't claim to see an alien - but he isn't sure what happened to him. Has anyone else had something like this happen to them??

My family has a Roswell book called Roswell: Case Closed which disproves the fact that a UFO crashed there... Guess what? I disproved half of the stuff they said!! xd It amused me!! My Astronomy teacher thought it was the best thing in the world when I brought her the book and my notes!

You could be right. Maybe some UFO's are robotic probes of some kind. The bulk of our space exploration has been robotic. Also, your english is fine. Actually your post is considerably easier to understand than many posts I've seen from people born in english-speaking countries!

I think they exist but not in the alien sense. I think they are more likely to be confidential USA military experiments.

Did you know space probes sent out by the united states have Earths location (relative to what we believe it is), a picture of a male and female human, and the atomic symbol for Hydrogen. I'm sure some one in NASA has figured out the probability; that it is entirely possible, highly unlikely of course, that our debris will eventually reach some form of extraterrestrial life. The question being whether this life form has the technology and ability to reach us.
There is abosultely no doubt that there has to be life out there, I don't know if any one has ever heard of Drake's Equation but assuming the universe is infinite then even with all the variables that are involved there has to be other planets similiar enough to ours that can support life. This said of course, we have to take in to consideration the process of evolution and the level of intelligence that these planets possibly posses, this significantly limits the possibility of us being contacted. In an infinite universe the distance between two planets of equal intelligence is to great and we know they would need to exceed our intelligence. Our satellite or radio signals reach the end of our known universe in roughly 40 years (estimated of course) so for another lifeform fitting all those specifications to pick up on our signals would take so long we would probably already be extinct as a species.

In summary, although it is possible I think it is highly unlikely we have had any contact with Alien species and UFOs are probably not alien related in any sense.