Taking the Measure of Nothing in the Universe

(Discover Blogs::Out There) – Corey S. Powell:

The extreme dynamic range of density is what gives the universe order. The exceedingly low density out there, between the galaxies, is what makes space transparent, allowing us to see nearly all the way to the outer limits of cosmic expansion. The staggeringly high density down here is what concentrates enough matter and energy to make life possible. And the organizing factor that gave rise to those the vastly varying structures is simplicity itself. It is just the pull of gravity, slowly but relentlessly amplifying little lumps and clumps. Give gravity enough time and those clumps turn into planets, atmospheres, and eventually people. …

outthere 2017/01/31 nothing

Cosmic bottle


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