If I read this correctly, the black hole binary is about 40 million solar masses and could be five times that. Our own black hole at Sgr A* is only a tenth of t

If I read this correctly, the black hole binary is about 40 million solar masses and could be five times that. Our own black hole at Sgr A* is only a tenth of that. This has to be a really rare occurrence. Hopefully, it won’t be behind the sun when it coalesces, though that won’t hide the gravitational effects, of course.