Dark energy is a mystery so daunting that it stretches and strains our most robust theories. The universe is expanding, ...

Imagine rewinding the clock to the very beginning of the universe. What would you see? Not the glittering galaxies captured ...

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

After five years of staring unblinking at the sky, the Atacama Cosmology Telescope (ACT) has compiled the most detailed map ...

The finest ever map of the cosmic microwave background - the faint evidence of the universe's early form - has yielded ...

The clearest and most precise images yet of the universe’s infancy from the Atacama Cosmology Telescope show the first steps ...

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

Dark energy, the mysterious phenomenon that powers the expansion of the universe, may undergo periodic 'violent transitions' ...