Can you prove that this blue orb is in fact a product of light, glass, and a water drop?
Of course. It's nothing new or mystical. It can be reproduced if you want to take the time to set up the circumstances.
If you have done that much research on how the mind works, then you should know that human minds are wired to want to believe in a higher being, a super father figure, someone to either blame it on or absolve us of blame. Most minds, if they didn't have that release, would really go around the bend. Doesn't mean they aren't all mad as hatters anyway, just that lot's of them are mad in the same way. With any luck, and the science of logical thought behind it, I think eventually, humans will evolve past this phase.