Whimsical Notions on a December evening

No material object could do what UFOs apparently do. Therefore they are not material.  There does seem however, to be intelligence behind them. That suggests they are intelligent, immaterial beings, or spirits. Why would spirits visit earth, though? That suggests they are spirits who are connected to earth. All of that suggests it’s possible they are spirits of the departed come here from elsewhere in the universe. That suggests that somewhere in the universe the heaven exists.