Winter Light Cones

Information cannot move through the universe (as far as we know) any faster than the speed of light. In the hyperbolically shaped world of spacetime, all factors that could influence my current state are in the “light cone” behind me, and all factors that I can influence in the future are in the “light cone” ahead of me. This photograph, from during a particularly nasty winter storm, exhibits light cones of another variety.

Winter Light Cones

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