Astronomers have found a background din of exceptionally long-wavelength gravitational waves pervading the cosmos. The cause? Probably supermassive black hole collisions, but more exotic options can’t be ruled out.
Astronomers have found a background din of exceptionally long-wavelength gravitational waves pervading the cosmos. The cause? Probably supermassive black hole collisions, but more exotic options can’t be ruled out.
I read a similar article yesterday stating this was a conclusion recently arrived at after of decades of collecting and reviewing data on the distance between our telescopes and sets of “calibration” quasars and calculating differences in the actual and expected distances over time.