What was the universe like in the first few hundreds of millions of years after it came into existence? How did the first stars and galaxies form? Those are questions that astronomers now have a ...

An international team of astronomers, co-led by researchers at the University of Galway, has made the unexpected discovery of ...

Astronomers have discovered a giant Saturn-sized planet orbiting TOI-6894, the smallest star ever known to host such a world.

Our Universe is 13.8 billion years old, and our Sun formed about 2/3rds of the way through. Here's what came before it.

A bright flash of radio waves from 3 billion years after the big bang is illuminating parts of the universe that astronomers ...

The majority of stars in the Universe formed only in the first 1-to-3 billion years, and the star-formation rate has plummeted ever since. Here's the cosmic story behind it.

No one has been able to find one of those first generation of stars, but scientists have announced a unique finding: a star from the second generation that originally formed in a different galaxy from ...