A faint radio "whisper" from ancient hydrogen reveals the universe was heating up long before it filled with starlight.

The low carbon levels are particularly interesting, as previously discovered “pristine” or metal-poor stars generally ...

New observations from the James Webb Space Telescope hint that the universe’s first stars might not have been ordinary fusion ...

The most ‘pristine’ star in the universe discovered by astronomers - Red giant star J0715-7334 is 20,000 times purer than the ...

A star found in the Large Magellanic Cloud is remarkably unpolluted by heavier elements, suggesting it is descended from the ...

On human timescales, the universe may as well be eternal. It’ll be here long after our species and our planet are gone, but ...

What is the biggest object in the universe? Learn more about the biggest objects in the universe, including galaxies, galaxy clusters, and dark matter.

Not all stars are created equally. Astronomers believe that the first stars to form after the Big Bang were mostly made of ...

Even before the first stars lit up the Universe, the Cosmos was not the cold place most researchers once imagined. New ...