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

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 ...

Gravitational-wave detectors have captured their biggest spectacle yet: two gargantuan, rapidly spinning black holes likely ...

The LIGO Hanford Observatory near the Tri-Cities and its twin in Louisiana detected ripples of time and space passing through ...

Astronomers have made a historic breakthrough: for the first time, a black hole has been observed consuming a neutron star,an event so powerful it sent ripples through the very fabric of space-time.

India is building the third LIGO detector, thus completing the triad with the two existing US-based observatories.