I was surprised that the article doesn't mention LISA at all. I had thought that's the next stage gravitational wave detector on the horizon?
https://www.esa.int/Science_Exploration/Space_Science/LISA_f...
https://www.esa.int/Science_Exploration/Space_Science/LISA_f...
They didn't use the acronym ("LISA"), but instead spelled out the entire thing.
>Researchers are now working on several next-generation LIGO-type observatories, both on Earth and, in space, the Laser Interferometer Space Antenna; [...]