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 ...

Add Yahoo as a preferred source to see more of our stories on Google. Scientists turn to numerical relativity to explore the universe’s origins. (CREDIT: Shutterstock) Asking what existed before the ...

The fate of the universe is still very much up in the air. Right now it is expanding, at an accelerating rate. If nothing changes, many billions or trillions of years from now the universe would ...

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 ...

Add Yahoo as a preferred source to see more of our stories on Google. An artist's illustration of the James Webb Space Telescope. Something is awry in our expanding cosmos. Nearly a century ago, the ...

The first set of results from a pioneering cosmic-mapping project hints that the repulsive force known as dark energy has changed over 11 billion years, which would alter ideas about how the Universe ...

The question of whether the cosmos goes on forever is no longer just a late night thought experiment, it is a live research problem that cuts to the heart of modern physics. Astrophysicists are using ...

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 ...

The clearest pictures yet of the newborn cosmos strengthen the prevailing model of the universe but deepen a mystery about its expansion rate. Measurements of this rate, known as the Hubble constant, ...

Asking what existed before the Big Bang is often dismissed as meaningless, since traditional physics breaks down when pushed that far back in time. Yet a new paper published in Living Reviews in ...