The signals from a number of black hole mergers, for example, can be combined to help understand the nature of dark energy, which is causing the universe's expansion to accelerate. (newscientist.com)
Finding many black hole mergers in the next few years will be a strong indicator that black holes are not few and far between but many and close together. (lindau-nobel.org)
We'll need to see more black hole mergers before we can tell, though — the signal doesn't give a clear answer either way. (newscientist.com)