Our sun, like all stars, is made mostly of hydrogen and helium. They are by far the most abundant elements, formed in the early moments of the universe. But our star is also rich in other elements ...

Astronomers may have just discovered the "most pristine" star ever seen, lurking near the edge of the Milky Way. The unusual alien sun, which could be the offspring of one of the universe's first ...

In a new study, astronomers report novel evidence regarding the limits of planet formation, finding that after a certain point, planets larger than Earth have difficulty forming near low-metallicity ...

An international team of researchers has made new observations of an unusual supernova, finding the most metal-poor stellar explosion ever observed. An international team of researchers has made new ...

Understanding the gas from which stars form is a fundamental goal in astrophysics. This is a pressing issue for pristine galaxies — those low in heavy elements, known as metals — whose growth remains ...