This is a video I had to make today. It comes after watching a video by Angeliki Anagnostou on black holes, and that the likely possibility that our entire realm is situated in a black hole.
Then once you add in the idea of a white hole, which to me might be the astral realm, it all might make sense.
White light tunnel is the white hole, the Void is the Black hole. Both are traps of Plato's Cave. Seeing what is beyond both is how we exit.
I added a small piece at the end when I saw a photo on the wikipedia site.
This is obviously where the research on these topics has to go.
I got inspired to go looking again for black holes based on a commentary on a NDE experience that Mark shared on Forever Conscious Research. This NDE is amazing.