Ron,
Stand in a dark room, and shine a thin beam of light at the far wall. Any dust particles in the beam of light will show (planets,etc). Place a mirror in the beam almost parallel to it, and deflect the light slightly. The spot on the wall where the light originally hit is now a dark hole.
What made the spot exist, (light), is no longer present, but the wall still exists, we just can't see it.
This was one of Einstein's early theories, wasn't it?
Me,--- I still get goosebumps when I see NCC-1701 switch on her Port and Starboard running lights. I guess its the earthbound, salt-water sailor in me.
Live long, and prosper
