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

Ripples in the fabric of space-time called gravitational waves may be the key to solving the Hubble tension — one of the biggest nagging problems in physics.

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

The powerful signal was six times louder than expected. When you purchase through links on our site, we may earn an affiliate commission. Here’s how it works. Breaking space news, the latest updates ...

Scientists using NASA's James Webb Space Telescope now think the "little red dots" spotted in the early universe could be a new kind of space object. They call it a "black hole star." Credit: T.

But in the case of the James Webb Space Telescope (JWST), which launched on Dec. 25, 2021, this anniversary marks an im ...

Wormholes are often imagined as tunnels through space or time—shortcuts across the universe. But this image rests on a misunderstanding of work by physicists Albert Einstein and Nathan Rosen. In 1935, ...

About a century ago, scientists were struggling to reconcile what seemed like a contradiction in Albert Einstein's theory of general relativity. Published in 1915, and already widely accepted ...

Astronomers using the James Webb Space Telescope report that a powerful gamma-ray burst detected in March may have been produced by the explosion of a massive star just 730 million years after the Big ...

The James Webb Space Telescope may have discovered Population III stars, the universe's first generation of stars. They may tell us more about how galaxies form. When you purchase through links on our ...