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 ...

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.

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

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