Phoenix A

Phoenix A is the largest known black hole in the universe, with a estimated size of 1e 11 solar masses, And its diameter is 590 to 600 billion kilometers (366 b…

Phoenix A is the largest known black hole in the universe, with a estimated size of 1e+11 solar masses, And its diameter is 590 to 600 billion kilometers (366 billion miles). Considered a ultramassive black hole [1]

It sits in the center of the Phoenix cluster galaxy (https://en.wikipedia.org/wiki/Phoenix_Cluster) this black hole is about 8.5 billion light years from earth, gaining 60 solar masses per year and estimated to form around 10 to 100 million years after the big bang.

The temperature of Phoenix A is billionths near absolute zero (0 kelvin)

  1. ↑ "Phoenix Cluster", Wikipedia, 2026-08-03, retrieved 2026-08-07

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