For decades, astronomers have been working to explore the properties of the first generation of stars in the universe. These stars created new chemical elements, enriched the chemical composition of ...

The universe’s very first molecule, previously assumed to be a momentary aside, now appears as a key builder of cosmic evolution.

To astronomers in the 1990s, these three facts were self-evident: The universe is expanding; all the matter in the universe ...

Researchers at Durham and collaborators in the Dark Energy Spectroscopic Instrument (DESI) mission have proposed a bold new ...

Astronomers have glimpsed the inner structure of a dying star in a rare kind of cosmic explosion called an "extremely ...

There are several candidates for the biggest star in the universe. One of them, VY Canis Majoris, is over 1,500 times the ...

The photos show light, dark and the polarization of light—background radiation known as the cosmic microwave background, and details the movement of hydrogen and helium gas at the beginning of ...