The windows of heaven are described in scripture as physical structures which may be opened or closed. This is possible because the firmament is a sphere of rigid crystal on the edge of space.
The Windows of Heaven
The Hawking Effect
One of our favorite books is "A Brief History of Time," by Stephen Hawking. In this and his other books Hawking expands use of the scientific method as an inductive tool. He opened up the realm of plausibility.
April 22nd
Could quasars be the windows of heaven? In our cosmological model it's plausible. That means it's possible. Applying the Hawking Effect: Of course they are, what else would they be?