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Quasars: the Brightest Black Holes

Quasars are among the most dramatic objects anywhere in the cosmos. They emit prodigious amounts of energy, all due to a supermassive black hole at the heart of a galaxy. Visible far across the Universe, quasars can be used to trace both the early life of galaxies, and the properties of the intervening space.

Carolin Susan Crawford is a British communicator of science, astrophysicist researcher, lecturer and academic based at the Institute of Astronomy and Emmanuel College, Cambridge. (from gresham.ac.uk)

Quasars: the Brightest Black Holes


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