That First Black Hole Image Validates The Einstein's Physics
(4th #anniversary of the 1st #BlackHoleImage)
#AlbertEinstein's general theory of relativity has passed a number of serious tests from the universe's most extreme conditions in the last few years. One of them was about #spanning from horizons to the stars.
General relativity describes #gravity as a consequence of the warping of #spacetime. Massive objects create a sort of dent or well in the cosmic fabric, which passing bodies fall into because they're following curved contours.
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The theory makes specific predictions about how this warping works. For example, the theory posits that black holes exist, and that each of these gravitational monsters has an #eventhorizon — a point of no return, beyond which nothing, not even light, can escape. Further, the event horizon should be roughly circular and of a predictable size, which depends on the black hole's mass.
And that's just what we saw in the unveiled EHT images, which show
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