Astronomers have been confounded by recent evidence that the universe expanded at different rates throughout its life. New findings risk turning the tension into a crisis, scientists say.

A new study published in the Journal of Cosmology and Astroparticle Physics (JCAP) presents a methodology to test the ...

When they use nearby objects like supernovae and galaxies to measure this expansion, they find the universe is stretching at about ... the afterglow of the Big Bang — along with our standard model of ...

The Vera C. Rubin Observatory is set to revolutionize our understanding of the cosmos by detecting millions of exploding ...

The model described by the researchers is set in the backdrop of an expanding universe that is accelerating in its expansion, just like the modern-day universe is. In that expanding universe ...

The Universe is expanding faster than predicted by theoretical models, and faster than can be explained by our current understanding of physics. This discrepancy between model and data became ...

A new study proposes a way to use weak gravitational lensing data to test the long-held Cosmological Principle of the ...

"The Hubble tension is now a Hubble crisis." The mystery of the Hubble tension has deepened with the startling finding that the Coma Cluster of galaxies is 38 million light-years closer than it should ...

The model isn't perfect. It still assumes something about the early universe — namely, that the cosmological constant is strong enough to lead to a rapidly expanding cosmos. And it doesn't ...

that our model of cosmology might be broken." There are two gold-standard methods for working out the Hubble constant — the value that quantifies the speed of the universe's expansion.