Observing the invisible: the long journey to the first image of a black hole
- Written by Alister Graham, Professor of Astronomy, Swinburne University of Technology
The first direct visual evidence of the supermassive black hole in the centre of galaxy Messier 87 and its shadow.EHT Collaboration
The first picture of a supermassive black hole at the centre of a galaxy shows how we have, in a sense, observed the invisible.
The ghostly image is a radio intensity map of the glowing plasma behind, and therefore...
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