One of the Holy Grails in cosmology is a look back at the earliest epochs of cosmic history. Unfortunately, the universe's ...

The new images, to be presented at an upcoming meeting of the American Physical Society, date back to when the universe was ...

This is the clearest image yet of the faint afterglow from the Big Bang, known as the cosmic microwave background radiation ...

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

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

Experts have unveiled the most detailed images yet of the universe’s infancy, capturing light that traveled for more than 13 billion years.

New observations of the cosmos show that the dark energy, a mysterious force that accelerates the expansion of the universe, ...

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

If our 13.8 billion-year-old cosmos could be considered middle-aged, researchers note these new images captured around its ...

A new analysis of astronomical data suggests unknown physics is at work assisting dark energy in acting almost as ...