"Cosmic archaeologists" have discovered an iron-deficient second-generation star, which provides evidence of how ancient ...

Observations show the universe appears flat, yet its true size and global shape beyond the observable horizon may remain forever unknown.

Gravity is by far the weakest of nature’s four fundamental forces, and physicists have spent decades asking a deceptively simple question: why? One answer, first sketched a century ago and refined ...

We all need some space sometimes—but it's harder to find than you might think. How far into our universe do we have to go to reach somewhere truly empty? Our first stop is the International Space ...

According to a new theory, our universe developed from a “pre-inflationary multiverse” made of particles in quantum superposition.

Depending on how you look at it, the universe might not have an "end," after all. This article was originally published at The Conversation. The publication contributed the article to Space.com's ...

James Webb Space Telescope captures unprecedented views of the early universe, unveiling new space findings that illuminate the cosmic dawn and galaxy formation. Pixabay, BlenderTimer The James Webb ...