A new theory promises to simplify our approach to the universe's earliest moments, but some cosmologists say further ...

In the earliest moments after the universe was born, everything changed—fast. This rapid expansion, known as cosmic inflation, was theorized to solve problems in the Big Bang model. It explains why ...

Speculative elements may not be necessary to explain the cosmos. A team of researchers, led by Raúl Jiménez, an ICREA ...

In 1932, Carl David Anderson’s groundbreaking discovery of antimatter confirmed the existence of antiparticles predicted by ...

Observing this distant epoch is notoriously difficult, astronomers say. At that time, the universe was filled with a dense ...

Could our location in space be skewing cosmic measurements? A new study suggests a giant void may explain the Hubble tension.

Webb has been orbiting more than a million miles from Earth, capturing breathtaking images of deep space. But how does it ...

The universe is expanding, but two exquisitely precise yardsticks say it’s doing so at two different speeds. That’s not a ...

A team of astronomers have discovered a curious figure in the universe. It is two distant galaxies colliding with each other ...

The universe's age largely hinges on its rate of expansion. Data from the 1990s' Hubble Space Telescope launch saw estimates ranging from 7 billion to 20 billion years. It was only later that a ...

Today, galaxies, stars, and heavier elements fill the ... deciphering the faint whispers encoded in ancient radio signals allows researchers to peer deeply into the universe’s earliest ...

The James Webb Space Telescope, NASA’s biggest, most expensive and powerful telescope to date, was launched in December 2021 with the intention of spending five to 10 years studying a plethora ...