reply to post by oinkment
Perhaps you need to do some more research. They are almost surely real. We have radar data to prove it. However, it doesn't prove what they are.
Anyway, my top guesses are experimental craft and alien craft.
The universe is huge, so there are probably a bunch of different races out there. The aliens themselves may not be here though. What people see often
could be unmanned, intelligent probes. There could be actual ships with aliens though... it would definitely be interesting either way!
We have some amazing technology of our own, so who knows how many UFOs are just secret projects of our own? It's highly possible that a large
percentage of UFOs aren't aliens at all... just our own experimental aircraft.
Some people say UFOs could be life forms, time travelers, or extra-dimensional. I think those are possibilities, but I just don't know how possible
they are. I put them a bit below experimental craft and alien craft. We know we can make stuff fly and we know it is possible for life to exist on a
planet. We only know of one planet, but it's not too hard to believe that there might be another one out there like Earth. What we don't know is if
life can develop and survive in space, we don't know if time travel is possible, and we don't know if things live in other dimensions. For all we
really know though.... some UFOs could be living, time traveling, extra-dimensional beings from another planet. For all we know.... they could be from
another universe entirely. We just don't know.