FrumFind.org: " all the world’s universes and galaxies were expanding at an incredible pace, and ( or unraveling like the woof or warp of thread (the gemara’s analogy) I guess when a a thread gets pulled and an entire garment gets unraveled).
Then, G-d said enough, and the universe either stopped expanding or slowed down significantly.
In my relatively rare world view, I believe this explains how G-d created gravity. Unfortunately science is typically not adequately taught in many of the religious schools I assume because the thought is if you believe in science, you will somehow, stop believing in G-d!"
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