That image of the supermassive black hole at the centre of galaxy Messier 87 is the first direct observation of a black hole’s shadow – the imprint of the event horizon, a sphere around the black hole’s singularity from which no light can escape. Einstein’s theory predicts the size of the event horizon based on the mass of the black hole, and in April 2019 it was already clear that the shadow fits general relativity’s prediction well.
This story is from the Issue 110 edition of All About Space.
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This story is from the Issue 110 edition of All About Space.
Start your 7-day Magzter GOLD free trial to access thousands of curated premium stories, and 9,000+ magazines and newspapers.
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