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It is mentioned:

> ...Researchers are now working on several next-generation LIGO-type observatories, both on Earth and, in space, the Laser Interferometer Space Antenna;...

Ooof missed that, thanks!

> LISA was first proposed as a mission to ESA in the early 1990s.

I remember reading about LISA when I was a little kid. Back then it was projected to launch in the far future of 2015. Now I would be surprised if it actually launches in 2035.

The university I studied at had a Gravitational Wave center under the Physics dept, and all the professors would joke about how LISA had been "less than a decade away" for 20 years.

LISA is mentioned in the 6th paragraph.