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A chart that shows everything that has ever existed

This chart shows every object that has ever existed, and raises a question: is the universe a black hole?

Noting that, Dr Lineweaver and a fellow physicist, Vihan Patel, devised a single chart onto which every known object in the history of the universe could be plotted. Start at the white dot on the left and move horizontally to the right and follow a timeline of the universe from the Big Bang to the cosmos as it is today. That white dot where the gravitational- and Compton-limit lines meet would be an instanton: dense enough to be governed by gravity but small enough to be wholly quantum.

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