All the tools for measuring it in the local, recent Universe give fairly consistent results, around 72 to 74 kilometers per ...

Physicists have improved the accuracy of a technique that uses variable stars to measure distances in the universe, providing a new figure for its expansion rate. When you purchase through links on ...

The universe is expanding, and physicists cannot agree on how fast. In a preprint posted in late May 2026, the H0 Distance ...

Trying to measure the size of the universe is no easy task. We know that the universe is expanding, though the exact rate of this expansion is not yet fixed. So one method that astronomers use to tell ...

A new study under the SPECTRUM project updated radiative opacity tables in hydrodynamical pulsation models for Classical Cepheid and RR Lyrae stars. The results show only minor shifts in instability ...

The Planck mission gave us the most precise value of the Hubble constant to date by measuring the cosmic microwave background. But studies made since using different methods provide different values.

New measurement deepens Hubble Tension, suggesting the Universe may be expanding faster and hinting at unknown physics.

Among the various questions we are often asked about, the one that comes to the forefront of the mind deals with how we accurately estimate how distant objects truly are from us. It’s a difficult task ...