Faint gravitational waves could soon be on LIGO’s radar

New analysis finds better prospects for spotting weak ripples from distant black hole mergers

Gravitational waves

RIPPLE ROUSER  Scientists may soon be able to tease out subtle signals from the gravitational waves produced by merging black holes too far away to detect directly.

SXS

A conspicuous “chirp” heralded the first detection of gravitational waves.