This video explains how scientists estimate the size of the observable universe, what “radius” means in cosmology, and why the universe may extend far beyond what we can see.

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...

In this video, we explore the vastness of the universe and attempt to quantify its size. We delve into the concepts of cosmic ...

The following is an extract from our Lost in Space-Time newsletter. Each month, we hand over the keyboard to a physicist or mathematician to tell you about fascinating ideas from their corner of the ...

The NASA/ESA/CSA James Webb Space Telescope has topped itself once again, delivering on its promise to push the boundaries of the observable universe closer to cosmic dawn with the confirmation of a ...