For decades, astronomers were only able to study the universe's very first stars using theoretical models. Now, observations from the James Webb Space Telescope (JWST) have revealed what may be the ...

The first stars were massive, hot, and bright, forming from primordial clumps of hydrogen and helium. They lived fast and died young, but not before producing new elements in their stellar remains ...

A faint glow of helium, hanging near one of the earliest known galaxies, may be the clearest sign yet that astronomers have finally caught the universe’s first stars in action. The signal comes from a ...

Just a few hundred million years after the Big Bang, the universe was a dark and simple place. There were no galaxies like the Milky Way, no planets, and no heavy elements such as carbon or oxygen.

Astronomers have had the most compelling glimpse yet of some of the universe’s first stars. These are unlike any other stars we have seen and could help us understand crucial properties about the ...