For a generation, cosmologists have worked with a simple story: the universe is not only expanding, it is expanding faster ...

Cosmology’s neat story of a universe driven apart by a simple, invisible “cosmic fuel” is starting to fray. A growing body of data suggests that dark energy, the ingredient thought to make up most of ...

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 ...

A Simon Fraser University cosmologist believes his team's new research may bring them a step closer to cracking one of ...

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 ...

The Atlantic Daily, a newsletter that guides you through the biggest stories of the day, helps you discover new ideas, and recommends the best in culture. Sign up for it here. To study the origins of ...

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 ...

David Weinberg receives funding from the National Science Foundation and NASA that supports his dark energy research. Ashley Ross receives funding from Lawrence Berkeley National Lab to support his ...