The Hubble constant is one of the most important numbers in cosmology because it tells us how fast the universe is expanding, which can be used to determine the age of the universe and its history. It ...

Is it possible to understand the universe without understanding the largest structures that reside in it? In principle, not ...

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.

"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 ...

Determining the expansion rate of the universe—known as the Hubble constant—has been a major scientific pursuit ever since 1929, when Edwin Hubble first discovered that the universe was expanding.

Or, more precisely, astronomers have used multiple methods of estimating the Hubble constant, and the different methods are converging quite tightly on two different values! This clearly can’t ...

38,725 people played the daily Crossword recently. Can you solve it faster than others?38,725 people played the daily Crossword recently. Can you solve it faster than others?

Scientists have discovered the largest known structure in the universe, a massive superstructure named Quipu. This enormous cosmic formation weighs an astonishing 200 quadrillion times the mass of the ...

There's two main tactics for measuring the Hubble constant. One is directly, by observing 'standard candles' — that is, objects with predictable luminosities such as Cepheid variables ...