A never-before-seen image of the cosmic microwave background, combining data from the Atacama Cosmology Telescope (ACT) and ...

A new approach suggests that a tiny spin of the universe throughout space might reconcile those conflicting numbers. If the ...

Research done by the Atacama Cosmology Telescope (ACT) project produced the clearest and most accurate images of the universe ...

One of the Holy Grails in cosmology is a look back at the earliest epochs of cosmic history. Unfortunately, the universe's first few hundred thousand years are shrouded in an impenetrable fog.

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

For decades, scientists have known that ordinary matter — everything made of atoms — accounts for just 15% of the universe’s ...

New research by the Atacama Cosmology Telescope (ACT) collaboration has produced the clearest images yet of the universe's infancy—the earliest cosmic time yet accessible to humans. Measuring ...

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

In the grand puzzle of the cosmos, one question continues to defy easy answers: how fast is the universe expanding?

In recent years, one of the most troubling puzzles in astrophysics has grown more urgent. Scientists have realized that the ...