In a glimpse of the early universe, astronomers have observed a galaxy as it appeared just 800 million years after the Big ...

Knotted structures once imagined by Lord Kelvin may actually have shaped the universe’s earliest moments, according to new ...

There is an important and unresolved tension in cosmology regarding the rate at which the universe is expanding, and ...

“Our latest discovery helps solve a 20-year cosmic mystery,” co-lead author Daniel Whalen from the University of Portsmouth's ...

Will the universe keep existing forever? An astrophysicist explains how scientists aren’t entirely sure, but they can make predictions.

New measurements using gravitational lensing suggest the universe’s current expansion rate does not agree with signals from ...

JWST uncovers evidence of ancient “monster stars” whose extreme chemistry may explain the origins of early supermassive black ...

NASA’s Webb Telescope detects the earliest known supernova, GRB 250314A, 730 million years after the Big Bang, capturing its host galaxy and providing unprecedented early-universe observations.

The Webb space telescope observed a supernova that took place when the universe was 730 million years old, setting a new ...

A surprisingly mature spiral galaxy named Alaknanda has been spotted just 1.5 billion years after the Big Bang—far earlier ...

Three thought experiments involving “demons” have haunted physics for centuries. What should we make of them today?