Gravity, one of the four fundamental forces of nature, appears reassuringly constant across the Universe, according to a decades-long study of a distant pulsar. This research helps to answer a ...

Earth’s gravitational force, g, has been known for centuries. But the exact value of G, the universal gravitational constant, ...

After a 10-year effort, physicists got a value for “Big G” that does not settle the debate over one of nature’s hardest numbers to nail down.

The Arecibo Observatory in Puerto Rico, one of the radio telescopes used to detect the pulses from pulsars in the new research. The telescope started to fall apart in 2020 and was decommisioned.

It does not resolve the discrepancy, but it gives physicists one more data point in their ongoing quest to nail down a more ...

Gravity feels constant, almost invisible. It holds oceans in place and keeps us grounded, so we rarely question it. Yet every ...

The gravitational constant, dubbed big G, determines the strength of the attraction between two masses anywhere in the universe. Scientists have been trying to measure big G for over 225 years, but ...

General Relativity continues to provide a robust framework for understanding the interplay between gravitational waves and the cosmological constant. Gravitational waves—ripples in the fabric of ...

The cosmological constant is the mathematical description of the energy that drives the ever-accelerating expansion of the cosmos. It's also the source of one of the most enduring and confounding ...

A new study links the universe’s expansion to quantum topology, suggesting that hidden mathematical structures may stabilize ...