There are ancient sightings and experiences recorded.
It is not easy to get undeniable physical evidence. The aliens do not want their craft to be found, so there are safeguards against that occurring. Safeguards are never 100%, so it is possible that one or more craft have been found. Now enters the governments. This craft is ours and is top secret and no one saw this craft or they are simply crazy and delusional. Not much hope for any significant physical proof of aliens or their craft under these conditions. Aliens would have to try and land in Central Park, while getting pounded by military missile fire, and hang around until society persuaded the military to stand away from the craft, so reporters and a staff of independent scientists, not owned by the Govt, could examine the craft and aliens on board, and then publish their findings for the public without Govt censorship. Not Very Likely To Happen Any Time Soon!
This question is still not answered!
I searched for the same information.
Apparently there were sightings as far back as the time of Alexander the Great - in 329BC.
Some claim Ezekiel recorded a sighting in the Bible - "A rushing windy great thundercloud like flying craft flew out of the north. The vehicle had the appearance of brilliant glowing fire all around it and the center of the illumination the vehicle was polished metal".
I wish there was more info because it bothers me that sightings suddenly only started to become common since the invention of photography and other modern media.
Why would the aliens patiently wait for us to fists invent cameras? It doesn't make sense to me.
oh history channel they have a show called aliens hunters well I donno but they may have it there some evedince in mexico theres a lot of aliens well on deserts or this place called somethin with the letter m and it has a number like 24564 or like that on history ob monster quest it may have it!
I'm a student am I am doing a report and I need information so thanks for it guys I apprecat it