The standard cosmological model (present-day version of "Big Bang," called Lambda-CDM) gives an age of the universe close to ...

WASHINGTON, Jan 30 (Reuters) - Observations by NASA's James Webb Space Telescope and Chandra X-ray Observatory are providing ...

The existence of massive, elliptical galaxies in the early universe has puzzled astronomers for two decades. An international ...

For nearly a century, astronomers have known that the universe is expanding. Most galaxies are carried outward with the flow ...

Astronomers have released the most ambitious cosmic map assembled so far, confirming that matter in the Universe is less ...

The young galaxy cluster existed about 12.8 billion years ago and has an estimated mass 20 trillion times that of the sun ...

You might think galaxies can’t ever find each other in our runaway cosmos, but it turns out gravity can sometimes overcome ...

When you gaze up at the night sky, it’s easy to feel as though you're looking into an endless, empty canvas sprinkled with ...

Two ways of measuring how fast the universe is expanding disagree, a puzzle known as the Hubble tension. Tiny magnetic fields ...

A flat plane of dark matter beyond the Local Group may explain why nearby galaxies move away from us instead of falling ...

By measuring the galaxy’s redshift, the scientists behind the discovery were able to confirm that its light has been ...

A team of astronomers looking at galaxies in the universe’s distant past have discovered nine young, compact galaxies, each weighing in at 200 billion times the mass of the Sun. Imagine receiving an ...