There is an important and unresolved tension in cosmology regarding the rate at which the universe is expanding, and ...

"It means cleaning house, narrowing the viable paths forward, and no longer spending energy on what are evidently dead ends." ...

The big picture: Astronomers have observed something unusual in the data gathered by the Hubble Space Telescope: the universe seems to be expanding faster today than it was billions of years ago, ...

"The Hubble tension is now a Hubble crisis." When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. The mystery of the Hubble tension has deepened with ...

Discover the most significant breakthroughs achieved by the James Webb Space Telescope (JWST) since its launch. From the ...

There is an important and unresolved tension in cosmology regarding the rate at which the universe is expanding, and ...

On the night of Oct. 5 to 6, 1923, Edwin Hubble discovered a new star — and revealed the utter vastness of the universe. Hubble was looking at the cosmos with the 100-inch Hooker telescope at the ...

This is the light echo of the Big Bang, the first light that freely moved through the universe. This relic is crucial to our ...

The Hubble Space Telescope has glimpsed the most distant single star it's ever observed, glimmering 28 billion light-years away. And the star could be between 50 to 500 times more massive than our sun ...

An expanding universe complicates this picture just a little bit, because the universe absolutely refuses to be ...

The Atacama Cosmology Telescope in Chile not only confirmed one of the greatest mysteries in the universe—it also ruled out ...