Gravity, as most people understand it, is the familiar force that pulls a falling apple toward Earth. But for astronomers and ...

By studying galaxy clusters separated by hundreds of millions of light-years, Penn physicist Patricio Gallardo and ...

Cosmic viewer The Atacama Cosmology Telescope in Chile was used by the team to observe gravitational interactions between ...

Quantum gravity and cosmology represent a frontier in theoretical physics where the principles of quantum mechanics are integrated with the framework of general relativity. This synthesis is crucial ...

Matrix models have emerged as a powerful framework in theoretical physics, offering a nonperturbative approach to describing quantum space-time. In these models, fundamental degrees of freedom are ...

Scientists could be wrong about dark energy. But they’re right about gravity, a new study suggests. Dark energy, the mysterious phenomenon that causes the expansion of the cosmos to accelerate, is ...

Scientists have tested gravity across some of the largest structures in the universe and ...

Physicists have used the Atacama Cosmology Telescope to prove that gravity follows the rules of Newton and Einstein across ...

Physicists have proposed a modified version of Einstein’s general relativity, called quadratic quantum gravity (QQG), that could eliminate the Big Bang singularity and naturally produce cosmic ...

A study of 300,000 galaxies confirms that gravity follows Newton's law and deepens the mystery of dark matter.

New research suggests that relic black holes from before the big bang may still shape galaxies today. These black holes could ...