One of the biggest challenges in modern physics is uniting quantum mechanics and general relativity. A new experiment may ...

In 1919, a total solar eclipse allowed scientists to confirm Einstein’s theory of general relativity by observing how the sun’s gravity bent starlight. This discovery revolutionized physics and made ...

A new study published in the journal PRX Quantum demonstrates how a network of quantum computers employing optical clocks can ...

The LIGO Hanford Observatory near the Tri-Cities and its twin in Louisiana detected ripples of time and space passing through Earth from the most massive collision of black holes ever observed, a ...

"God does not play dice." This famous remark by Albert Einstein critiqued the probabilistic nature of quantum mechanics.

While general relativity is the best model we have of gravity and the universe on large scales, and quantum physics is the best description of the sub-atomic, these theories won't unify.

The Trump administration has proposed closing either the LIGO Hanford observatory in WA or its twin in Louisiana.

Two colossal black holes among the most massive ever seen collided in deep space, creating gravitational waves that rippled across the cosmos and shook the foundations of astrophysical theory.

Scientists propose using quantum-entangled clocks to test how gravity affects quantum mechanics in curved spacetime.

Gravitational-wave detectors have captured their biggest spectacle yet: two gargantuan, rapidly spinning black holes likely forged by earlier smash-ups fused into a 225-solar-mass titan, GW231123. The ...

Astronomers have detected the largest black hole merger ever, and it has challenged their understanding of such formations.

The merger resulted in a combined black hole 225 times our sun’s mass, and challenges current astrophysical models of black ...