One night after falling asleep, I dreamt about the Death Star from Star Wars. Looked just like it.
What's amazing is that I'm not alone. Dozens, nay, thousands of people have had similar dreams. They lose consciousness and then have vivid perceptions of large, spherical space stations of similar size and design, and often it's called a 'Death Star' by people in the vision.
This is an amazing coincidence, and I think we can take it as proof positive that the Death Star truly exists.
NO, WAIT. That's stupid. The Death Star appears in a very widely-known piece of fiction. It's an established piece of culture. People think about such things, go to sleep, and then dream about them. This doesn't even begin to suggest that any such entity actually exists. That's one of the dumbest things I've ever heard.
Now try this one on for size:
'Lots of people in near-death situations, upon losing consciousness, see angels or a bright light telling them it's not their time yet, as can be found in numerous works of popular culture. Therefore, such things really exist.'.
Dreaming about something does not prove it exists, kid!