Animation of the findings by researchers who used time-delay cosmography to independently confirm that the universe’s current ...

Our understanding of the true nature of the cosmos relies on measurements of its expansion, but cosmologists have been ...

Learn how Hubble is measuring the expansion rate of the Universe in this new explainer from NASA's Goddard Space Flight ...

New gravitational lensing measurements by the TDCOSMO Collaboration support the Hubble Tension, confirming differences between Early and Late Universe Hubble Constant values using updated ...

Scientists are testing a novel way to measure cosmic expansion using time delays in gravitationally lensed quasars. Their ...

The Hubble tension is especially troubling because it involves two sets of measurements that offer conflicting views of the ...

For much of the twentieth century, scientists expected the expanding universe to slow over time. The opposite turned out to ...

A team of astronomers using a variety of ground and space-based telescopes including the W. M. Keck Observatory on Maunakea, Hawaiʻi Island, have made one of the most precise independent measurements ...

R esearchers have calculated one of the most precise estimates for the expansion rate of the universe today, and it turns out ...

New measurements using gravitational lensing suggest the universe’s current expansion rate does not agree with signals from ...

For the first time, astronomers have captured the brilliance of a superluminous supernova via gravitational lensing.

The Atacama Cosmology Telescope in Chile has released its final batch of data after 15 years — and it proves that the Hubble ...