LIGO, facing threats of closure, more than doubles its black hole haul
Gravitational wave astronomy matured since 2015 with LIGO detecting hundreds of black hole mergers, yet its future risks abrupt termination without decisive action.
Scientists Detect Sign of Something Impossible Out in Deep Space
Black holes this massive are forbidden through standard stellar evolution models. This is the most massive black hole binary we've observed through gravitational waves, and it presents a real challenge to our understanding of black hole formation.