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

The surface of Earth is finite. We can measure it. If it was expanding, then its size would grow with time. And once again, ...

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

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

The universe’s expansion rate was supposed to be a solved problem, yet the latest high precision map of the early cosmos has ...

This NASA/ESA Hubble Space Telescope image features the spiral galaxy Messier 77, also known as the Squid Galaxy. CREDIT: ESA/Hubble & NASA, L. C. Ho, D. Thilker. Get the Popular Science daily ...

In the grand puzzle of the cosmos, one question continues to defy easy answers: how fast is the universe expanding? Astronomers have tried two main methods to figure it out, but their numbers don’t ...

An international group of more than 900 researchers studying the expansion of the universe presented their findings on Wednesday during the American Physical Society’s Global Physics Summit in Anaheim ...

After a century of observations spanning the breadth of the cosmos and theoretical insights that push humanity's vision of the universe to its utmost limits, we can finally, confidently say that the ...