The universe’s expansion rate was supposed to be a solved problem, yet the latest high precision map of the early cosmos has pushed one of modern astronomy’s sharpest conflicts back to center stage.

The universe is expanding, but astronomers still cannot agree on exactly how fast. That mismatch, known as the Hubble tension, has turned a seemingly simple number into one of the biggest headaches in ...

When you buy through links on our articles, Future and its syndication partners may earn a commission. A wider view of the Milky Way with a section studied by Euclid highlighted representing just 1% ...

Researchers from the University of Portsmouth, UK have solved an intriguing cosmological mystery by creating the largest ever map of how matter is distributed in the universe. The rest of this article ...

The technique of Lyman-alpha tomography is represented in this illustration: As light from distant background galaxies (yellow arrows) travels through the universe towards Earth, hydrogen gas in the ...