Identifying the Earliest Known Black Hole: What Was the First Black Hole Discovered?

The first black hole ever discovered is called Cygnus X-1. It was discovered in 1964 by a team of astronomers led by Riccardo Giacconi using oЬѕeгⱱаtіoпѕ from the Uhuru X-ray satellite. Cygnus X-1 is located in the constellation Cygnus and is a binary system consisting of a massive star and a black hole.

The black hole in Cygnus X-1 is estimated to be about 14.8 times the mass of the sun, and it is one of the most studied black holes in the sky. Its discovery was a major milestone in astrophysics and led to a greater understanding of the behavior and properties of black holes.