Unexpected epochs of stillness that punctuate the cosmic timeline could offer a natural explanation for dark matter and many ...

Dark energy is still a mystery, but powerful new telescopes are set to uncover clues. With NASA and ESA leading the charge, ...

The hypothesis therefore disputes the idea that more remote galaxies are traveling faster than nearby ones, and has been used ...

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.