A new study questions dark energy's role in the universe's acceleration, suggesting it may be weakening instead.

So, to create a must-read story list for you, we asked our staff to select their favorite pieces of 2025. Alas, while you're ...

A mysterious force called Dark Energy might be changing, in a way that challenges our current understanding of the nature of time and space.

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

We suggest that there should be a minimum electromagnetic radiation frequency in the Hubble sphere and that this seems to be directly linked to the Hawking Temperature and our recent discovery that ...

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 ...

Yu-Jing Qin, a postdoctoral researcher at California Institute of Technology (Caltech), led a series of spectroscopic observations using Keck Observatory’s Low Resolution Imaging Spectrometer, ...

An international team of astronomers using a combination of ground-based telescopes, including the W. M. Keck Observatory on ...

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

New details from the Webb telescope indicate there might be a fundamental problem with our understanding of the universe. The spiral galaxy NGC 4258, imaged by the Hubble Space Telescope, measures ...

Alfredo has a PhD in Astrophysics and a Master's in Quantum Fields and Fundamental Forces from Imperial College London.View full profile Alfredo has a PhD in Astrophysics and a Master's in Quantum ...