It’s always amazing, and more than a little humbling, when the universe reminds us that our “common sense” is provincial, ...

There is an important and unresolved tension in cosmology regarding the rate at which the universe is expanding, and ...

Scientists have many big questions to tackle about the universe, including how big it actually is. But even the proposed ...

A surprisingly mature spiral galaxy named Alaknanda has been spotted just 1.5 billion years after the Big Bang—far earlier ...

In the leading model of cosmology, most of the universe is invisible: a combined 95% is made of dark matter and dark energy.

The most distant known star in the universe is no longer a faint, anonymous point of light. With the James Webb Space ...

A team of astronomers using a variety of ground and space-based telescopes including the W. M. Keck Observatory on Maunakea, ...

Most of the universe is made up of dark matter and dark energy. The majority of everything else is dispersed throughout space ...

Keck Observatory reports that spectroscopy from its Keck Cosmic Web Imager, combined with data from NASA’s James Webb and ...

Will the universe keep existing forever? An astrophysicist explains how scientists aren’t entirely sure, but they can make ...