The collision of two black holes holes is seen in this still from a computer simulation.
Credit: The SXS Project
LIGO can detect gravitational waves that are generated when two black holes collide.
Credit: The SXS Project

LIGO is back — and can now spot more colliding black holes than ever

The twin gravitational-wave detectors have started a new observation run after a major upgrade.

Laser Interferometer Gravitational-Wave Observatory, Virgo, KAGRA, neutron stars, quantum mechanics, photons, Nergis Mavalvala, Victoria Xu, astrophysics