Popular science (SciPop) is an inductive rationalization of the the premise that the universe has no divine, supernatural cause. Unfortunately the universe has a divine, supernatural cause.
The third heaven is the dome or firmament, which is a sea of glass. It's a rigid crystalline sphere on the edge of space which formed in response to the creation of gravity on the second day.
Gravity isn't merely an implicit property of space-time as popular science (SciPop) has conveniently chosen to believe. That's merely an opportunistic rationalization of circumstantial evidence.
The first axiom of popular science (SciPop) is There's a causal relationship between space-time and gravity. It's Newton's law of universal gravitation. Dark matter is a major deity in the atheist pantheon assigned to defend this axiom.
Current cosmological models of the universe appear to show that 80% of the mass of the universe is missing. There's no physical reason why the cosmos maintains its current stable state.
We (that's me and the Holy spirit) have an illustration from Physics that shows how Biblical literalists don't have an inkling of the extent to which the Bible can be taken literally.
After repeated failures to detect dark matter, whoever comes up with an explanation of why we can't detect it which enhances the popular science narrative of godless existence (SciPop), will get a Nobel Prize.
All current cosmological models show that somewhere between %80-85 of the mass of the universe is missing. Based on our understanding of particle physics we can move this number up to %90. Where is it?
The distance to the firmament (heaven), from the center of the Earth, is approx. 1,736,441 light years. But we (that's me and the Holy spirit) would appreciate it if someone would check our math.
Dark matter doesn't exist. However it's necessary, in the popular science paradigm (SciPop), because the firmament is the source of gravitational interaction which keeps the universe in its current stable state.