New images of the infant universe captured by the Atacama Cosmology Telescope (ACT) are the most precise "baby pictures" to ...

The new images—of when the cosmos was a mere 380,000 years old—show the "first steps towards making the earliest stars and ...

New research by the Atacama Cosmology Telescope (ACT) collaboration has produced the clearest images yet of the universe's ...

Cosmic microwave background data support cosmology’s standard model but retain a mystery about the universe’s expansion rate.

The dark energy's impact may be weakening over time, according to new results from the DESI collaboration, which includes ...

New data further challenge the best scientific theory of the history and the structure of the universe. But a separate recent ...

A new image from the Atacama Cosmology Telescope reveals the universe in its infancy, showcasing the Milky Way and cosmic ...

A telescope in Chile has spent years working on by far the most precise map of the earliest visible universe. It now reveals ...

Welcome to March 20, a day that has seen its fair share of transformative events throughout history. **Scientific Milestone: ...

Last year, an enormous map of the cosmos hinted that the engine driving cosmic expansion might be sputtering. Now physicists ...

The photos show light, dark and the polarization of light—background radiation known as the cosmic microwave background, and details the movement of hydrogen and helium gas at the beginning of ...