Surely if it is possible that aliens exist, it is similary possible they can do extraordinary things, which we would consider as superpowers.
In this video, there appears to be proof that alien beings are not only among us, but they also possess vast intelligence and sophisticated technology. Who's to say they don't also have superpowers? Telepathy, clairvoyance, maybe even telekinesis...
Note: I did not make this video, nor have I provided the commentary. I just thought it was interesting enough to merit a viewing.
Maybe those transparent ships (?) use a cloaking system to bend light that could be adapted to the human body, giving a person the power of invisibility. It would then be possible for someone to vanish right before your eyes, like a ghost. Could it be that many of the major reported ghost sightings are really of beings existing on our physical plane, while making use of cloaking technology? Maybe they are normal people just goofing around with Merlin's magic coat!