Scientists are peering into the universe's mysterious Cosmic Dawn using the faint whispers of hydrogen radio waves emitted ...

For years, astronomers have been working to piece together the story of our universe, but the critical early chapters ...

Nearly 50 years ago, physicists floated a bold idea: our universe might be stuck in a false vacuum. This state feels stable, ...

The arrow of time can teach us more about how the universe began – and how it will end, says quantum columnist Karmela ...

Is the Hubble constant—a key part of how we measure the expansion of our universe—in a crisis? Some cosmologists say yes.

Using the XMM-Newton telescope, astronomers have discovered a vast 23 million light-year-wide tendril connecting galactic clusters and containing much of the universe's missing matter.

"This is a unique opportunity to learn how the universe's first light emerged from the darkness." ...

Understanding how the universe transitioned from darkness to light with the formation of the first stars and galaxies is a ...

A faint radio signal beamed over the eons by hydrogen atoms in the early universe that contains important information about ...

The prevailing model of cosmology, called the lambda-CDM model ... (WMAP) project calculated the universe to be 13.772 billion years old. 2. Expanding Spacetime vs. 'Tired Light' ...

In 1998, two independent projects—the Supernova Cosmology Project and the High-Z Supernova Search Team—confirmed that the expansion of the universe was accelerating.

Called the COSMOS-Web field, the project, with data collected by the James Webb Space Telescope (JWST), consists of all the imaging and a catalog of nearly 800,000 galaxies spanning nearly all of ...