Scientists say the two black holes merged after colliding at speeds near the limit allowed by Albert Einstein’s theory of ...

The future of at least one of the U.S. LIGO observatories is in jeopardy as deep cuts to science programs are proposed by the ...

What occurs when the universe plays a cosmic curveball, breaking down long-standing assumptions about how black holes form?

Scientists have detected gravitational waves from a black hole collision, revealing one with an unexpected mass that challenges existing theories about star death.

A gravitational wave has revealed the biggest black-hole merger ever recorded—so massive and extreme, it defies current astrophysical models. The clash formed a 225-solar-mass monster, possibly made ...

Two black holes, each more massive than a hundred suns, collided and merged into each other, in what is dubbed as the largest merger of its kind ever recorded, according to new research.

The Trump administration has called for shutting down either a Tri-Cities, WA, or Louisiana observatory that work in tandem.