About half of the non-dark matter in the universe cannot be accounted for by stars and galaxies alone. Now, scientists say ...

Zhúlóng is the most distant spiral galaxy ever seen. It formed 1 billion years after Big Bang, yet has a calm structure like ...

In simplest terms, the rate at which the universe expands on paper doesn’t match actual astronomical observations. That speed ...

People are still puzzling over why nearby objects and distant galaxies move away from us at different speeds. There may now ...

A faint cosmic spin – one rotation per 500 billion years – could resolve the stubborn Hubble tension by tweaking standard ...