BibleStudent, there is a fatal flaw with your comparison between God and Dark Matter and Dark Energy, and that flaw is the simple fact that the effects of Dark Matter and Dark Energy (or whatever they truly are) can be detected.
If you can name one--that's right, just one--aspect or effect of the God of the Bible that can be detected in any fashion, I will gladly swap out my atheist beliefs and rejoin the world of the theists.
I don't believe in God because he/she/it can not be detected by any of my senses. And that's me talking from 25 years of being a believer, battling demonic oppression, and believing myself to have a great purpose and powerful friend. Dark Matter and Energy are are a product of math. God is not a product of math. It's a product of chemical reactions in the brain. So please, make sure that the detection you provide is evidenced through math, and not just a special feeling in your "heart".