Astronomers Detect a Black Hole Merger That’s So Massive It Shouldn’t Exist

The powerful merger, designated GW231123, produced an extremely large black hole about 225 times the mass of our Sun.

Jul 13, 2025 2

Astronomers Detect a Black Hole Merger That’s So Massive It Shouldn’t Exist
The powerful merger, designated GW231123, produced an extremely large black hole about 225 times the mass of our Sun.
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