Cygnus A
Discovery n. the act of discovering; exposure to view; laying open; showing; finding out or ascertaining something previously unknown or unrecognized;

From theory to discovery, this section traces how the concept of black holes was conceived, how we discovered stellar black holes in X-ray binary systems, supermassive black holes in the centers of galaxies, and middleweight black holes.

Conceiving Black Holes

Discovering Black Holes in Binary Systems Discovering Black Holes in Centers of Galaxies Discovering Middleweight Black Holes Discovery of Black Holes Review
© NRAO/AUI - Radio Image of Cygnus A
Observed by R.A. Perley, J.W. Dreher
Plunge into the Event Horizon
Discovery of Black Holes
Formation of Black Holes
Types of Black Holes
Black Holes Physics
Myths about Black Holes

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