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

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

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

For decades, the space community has been puzzled by a cosmic mystery: the universe seems to be expanding faster than it should be. This discrepancy, known as the Hubble Tension, has challenged our ...

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

Our galaxy may reside in a billion-light-year-wide cosmic bubble that accelerates local expansion, potentially settling the long-running Hubble tension. Galaxy counts reveal a sparsely populated ...

"The supernova was named 'supernova Hope' since it gives astronomers hope to better understand the universe’s changing expansion rate." When you purchase through links on our site, we may earn an ...

New research suggests that a troubling disparity in the rate of expansion of the universe, known as the Hubble constant, may arise from the fact Earth sits in a vast underdense region of the cosmos.

Fifteen years ago cosmologists were flying high. The simple but wildly successful “standard model of cosmology” could, with just a few ingredients, account for a lot of what we see in the universe. It ...

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 ...