Energy Orbs
Spirit in their true form
In recent years spirit energy orbs have been seen more regularly.
These globes have been described and even photographed as being of different colors and sizes while seemingly just hanging in mid air.
If this seems difficult to take in, remember spirit are energy, having left behind their physical bodies.
When a medium makes contact they will be able to describe the previous physical appearance of the spirit communicator..
It is commonly believed that spirit re-create this appearance so that they can be recognized by those they left behind, making the process even more involved than we first thought.
If these orbs represent a truer appearance of our spirit friends why would they then choose to display themselves in a manner which we do not recognize.
We can only surmise, but if we consider our growing acceptance of spiritual matters then perhaps this is the modern equivalent of our ghost.