Astrophysicists report solid evidence for a background hum of gravitational waves

Astrophysicists have found the best evidence yet for a low-frequency hum of gravitational waves rippling through the cosmos, based on 15 years worth of ultra-precise measurements checking the timing of radio pulses from distant stars. The evidence, newly published in the Astrophysical Journal Letters, comes from several teams of researchers, including several from the University...

June 30, 2023