Gravitational Wave Detetcion (IMAGE) Optica Caption The addition of Virgo to the mix of gravitational-wave observatories allowed a 20-fold sharpening of the ability to locate gravitational waves in the sky Credit LIGO/Virgo Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.