A new Big Bang model does away with speculative elements, putting gravitational waves at the forefront of the creation of ...

A galaxy in the early universe was rich with oxygen, astronomers have found. The discovery raises questions about how early life could have first appeared in the universe.

We currently know of more than 5,800 planets beyond the solar system, but we've only found the tiniest fraction of the exoplanets that astronomers think lie elsewhere in the universe.

The universe exists because matter and antimatter are not good friends. Is there a scientific reason why the universe exists?

After the big bang, electricity and light filled the universe in what's called the epoch of reionization. The James Webb Space Telescope is hunting for more clues to explain this time period.

While radio waves are the method of choice when searching for signals of intelligent alien life, other detectable signs also ...

In a close-knit galaxy, the stars would be squished together so tightly that they would routinely steal planets from each other.

At three in the morning, when I stumbled upon the new images from the James Webb Telescope, I almost spilled my coffee on the ...

Surprise leftover dust in a nearby tiny galaxy suggests early galaxies may have had more planet-making ingredients than we thought.

Where there are galaxies, there are planets — some perhaps with life. For seekers of life beyond Earth, the solar system harbors an abundance of possibilities.

The ferocious, black hole–powered quasars of the younger universe generally occur in the biggest elliptical galaxies, mostly sitting in the cores of galaxy clusters.