Depending on how you look at it, the universe might not have an "end," after all. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. This article ...

Andromeda and the Milky Way merge. NASA; ESA; Z. Levay and R. van der Marel, STScI; T. Hallas; and A. Mellinger Share Curious Kids is a series for children of all ages. If you have a question you’d ...

When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. After a century of observations spanning the breadth of the cosmos and theoretical insights that ...

The surface of Earth is finite. We can measure it. If it was expanding, then its size would grow with time. And once again, good ol' Earth helps us understand what the universe might be doing beyond ...

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 ...