Roger Ramjets
Philosopher
No. They are paranormal. Which is to say, of (purportedly) physical origin, but contrary to verifiable evidence and current scientific knowledge.Are Flying Saucers Supernatural?
The fact that we have developed space flight is a good indication that aliens on other planets probably have also. But the chances of them developing spacecraft with FTL drive and anti-gravity, then using them to visit our planet and abduct people, mutilate cows, make crop circles etc., is much less likely than that people are just misidentifying aerial objects and/or making up stories.