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Ask Ethan: What Should A Black Hole’s Event Horizon Look Like? (Synopsis)

22 Apr 2017, 14:09 UTC
Ask Ethan: What Should A Black Hole’s Event Horizon Look Like? (Synopsis) NASA / JPL-Caltech

Black holes were one of the first consequences of general relativity that were predicted to exist, and the more we’ve studied the Universe, the more interesting they’ve become. We’ve calculated their physical sizes, their effects on the curvature of spacetime, their apparent angular sizes, and the properties of matter that gets caught in an accretion disk around them. But we’re about to take another giant leap forward: we’ve about to directly observe one for the first time.

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