[josephagoss]

I didn’t realise that, thanks for clarifying.

I wonder if this predicted supermassive black hole merger is rare for us - once in a lifetime, or we find out after LISA is operational that they happened frequently.

Am I right in thinking that the search area something like LISA and LIGO "see" is essentially the entire observable universe?

Could we could catch a merger from the first billion or so years of the universe?

[dylan604]

https://www.youtube.com/watch?v=rJLtT0QXoPo

This video has answers to your questions.

[tromp]

No idea why this was downvoted. I thought perhaps it's Rick Astley, but no. I found it quite instructive.

[SturgeonsLaw]

Interesting video, thanks for posting it