Still in its original galaxy, a rare holdout from the second generation of stars sheds new light on the origins of the elements—and how massive supernovae reshaped the cosmos ...

When astronomers look deep into the early universe, the expectation is simple. You should see young galaxies still assembling, with stars forming first and black holes growing later. That picture is ...

The discovery of the universe’s oldest stars, identified within our own Milky Way galaxy, marks a significant leap forward in our understanding of cosmic history. These ancient stars, formed shortly ...