It's mentioned both in the article, and in the comments here where someone else thought it isn't mentioned. They didn't use the acronym ("LISA"), but instead s

It's mentioned both in the article, and in the comments here where someone else thought it isn't mentioned. 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; [...]