Ok, I had an awesome post all written out for this, then my MAC lost connection to my wireless network. Again. It does that, periodically...just drops connection to my router. No errors. No reason for it. My Toshiba (Windows) never does that!! WTF!
Let me try to reproduce....
I could certainly understand that aliens, or any other sentient and intelligent life form, could die and form what we would call a ghost. For the parapsychologists out there this would be the exact same as the survival of consciousness just applied to aliens. Now some stories I've heard of aliens during face-to-face encounters would imply that they use psi as parapsychologists believe in the ability; PK, telepathy, etc... so the survival of consciousness has validity.
However, the general working theory regarding the survival of consciousness is that said-consciousness will migrate to a place of familiarity after the death of the physical body. In other words, generally speaking a ghost will haunt a location, or more rarely, a person or a thing, but there always seems to be some sort of an attachment. Rarely, if ever, is it believed a ghost will 'wander' inter-dimentionally even if it can. With that said it would stand to reason that we would have no alien ghosts here on Earth unless that particular alien lived for a long period of time here on Earth, then passed away. Such would indicate that an alien would be 'bound' to Earth.
This opens up a whole world of additional questions and concepts! For instance we're making the assumption for the ETH explanation of aliens but what if they are inter-dimensional or ultra-terrestrial? This may give credence to the aliens-as-ghosts idea just in concept.
Additionally there are questions regarding the geomagnetic theories of ghosts which state that particular geomagnetic minerals and rocks will 'hold' the impression of ghosts here on Earth. Would alien consciousness(es) be subject to those theories as well? If so, is it possible, then, to have a residual alien haunting? Or an intelligent alien haunting?
Deep thoughts in that, and many, many questions. I think my ears are starting to bleed.
Thoughts?