Since the beginning of time, many humans have accepted the cold hard truth that they are not alone in this universe. There are so many complexities we cannot fully comprehend and many mysteries left unsolved. One of them is UFOs, Unidentified Flying Objects. Basically, these are mysterious objects or ships that people claim travel from space and are said to be carrying aliens and other species from different galaxies. Humans are fragile creatures who are scared of the unknown. This is why the world has spared no effort in unraveling the mystery behind aliens and the many underlying secrets of Space. However, there have been so many sightings of UFOs, and at this point, it cannot be denied that we are truly not alone. We have compiled a list of 45 strangest UFO and alien sightings people have encountered.