1st black hole spotted in 1964 much bigger than earlier thought, says study

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New observations of the first black hole ever detected, the Cygnus X-1 in 1964, have led astronomers to question what they know about the Universe’s most mysterious objects.

According to the new study published in the journal Science, the black hole is actually a lot bigger than it was previously known to be. Research says the Cygnus X-1 contains the most massive stellar-mass black hole ever detected. It is also known to have 21 times the sun’s mass, which makes it 50 percent bigger than researchers previously believed it to be.