The galaxy cluster appears hotter and more mature than it should for its young age, challenging what we think we know about ...

Cosmic inflation tries to describe one brief but crucial phase in the Big Bang that launched the universe onto its expansion course. Many textbooks and science educators have attempted to describe the ...

But there are several important anomalies, including a widely debated one called the Hubble tension. It is named after Edwin ...

Physicists are quietly entertaining one of the strangest ideas in modern cosmology: that the cosmos we see might be only half ...

Contrary to popular belief, our universe may not be constantly expanding after all. A groundbreaking study by South Korean ...

Astronomers discovered an extremely hot galaxy cluster in the region that was far hotter and older than current theories ...

A 'shadow' cast on the faint, leftover glow of the Big Bang has revealed a giant object in the early Universe that defies our ...

In the search to understand how the universe came to be, a new theory is rewriting the script. Instead of one massive, fiery birth like the Big Bang, this idea suggests the cosmos has been growing in ...

"We were surprised that water could actually form so early on — even before the birth of the first galaxies." When you purchase through links on our site, we may earn an affiliate commission. Here’s ...

WASHINGTON (Reuters) - NASA is preparing to launch a megaphone-shaped observatory on a mission to better understand what happened immediately after the Big Bang that initiated the universe and to ...

Nowadays, the dark of night is interspersed with the light of stars. But before the stars were born, did light shine at the beginning of the universe? The short answer is "no." But the long answer ...