A long-simmering disagreement over the universe’s present-day expansion rate shows no signs of resolution, leaving experts ...

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 ...

New research suggests that a troubling disparity in the rate of expansion of the universe, known as the Hubble constant, may arise from the fact Earth sits in a vast underdense region of the cosmos.

After five years of staring unblinking at the sky, the Atacama Cosmology Telescope (ACT) has compiled the most detailed map we've ever seen of the cosmic microwave background – the faint light that ...

The Hubble tension The measurements of the Hubble constant described in this article ... When cepheids are observable in the ...

If you buy through a BGR link, we may earn an affiliate commission, helping support our expert product labs. Birthed from the minds of astronomers Edwin Hubble and Milton Humason, the Hubble ...

On 1 January 1925, US astronomer Henry Norris Russell made a startling announcement to the American Astronomical Society in Washington DC: observations by fellow astronomer Edwin Hubble showed ...

In the last decades, our understanding of the Universe has made tremendous progress. Not long ago, “precision astronomy” was thought to be an oxymoron. Nowadays, satellite experiments and ...