A pair of satellites launched from China carry detectors for gamma rays and charged particles, which could help locate the source of gravitational wave signals
Source:
https://www.newscientist.com/article/2262495-china-launched-two-satellites-to-find-sources-of-gravitational-waves/?utm_campaign=RSS%7CNSNS&utm_source=NSNS&utm_medium=RSS&utm_content=home