Drawing together leading experts from across the field, an international collaboration of cosmologists has created a unified ...

Hubble constant. The Hubble constant is crucial in understanding the rate of expansion of the universe and, by extension, estimating the universe’s age. This collaborative effort unites various ...

Astronomers have proposed a new way to solve the so-called “Hubble tension,” but the approach ultimately raises more questions than it answers. By way of background, cosmologists are in a bit of a ...

In the late 1990s, cosmologists made a prediction about how much ordinary matter there should be in the universe. About 5%, they estimated, should be regular stuff with the rest a mixture of dark ...

Instead of a single Big Bang that brought the universe into existence billions of years ago, cosmologists are starting to suspect there may have been a second transformative event that could explain ...

A physicist proposes that the universe is not empty space, but is a viscous fluid, fueling the expansion and contraction we see.

The Vera C. Rubin Observatory is based in Chile. It sits atop Cerro Pachón mountain. Atop a mountain in Chile, where the skies seem bigger and darker, sits the Vera C. Rubin Observatory, a project of ...

Cosmology scientists at the Lawrence Berkeley National Laboratory have made a rare discovery: a cluster of galaxies that span most of the observable universe. This cluster — the Carousel Lens — is ...

Two Johns Hopkins University research scientists who use the Japanese art of paper folding, known as origami, as a metaphor for understanding the complexity of the cosmos have been named winners of an ...