Astronomers once thought the universe's first stars (made of hydrogen and helium) were nearly all giants, hundreds to ...

Most stars in the Milky Way move at steady speeds, orbiting the galactic center in regular paths. But astronomers have ...

For decades, astronomers have wondered what the very first stars in the universe were like. These stars formed new chemical elements, which enriched the universe and allowed the next generations of ...

Astronomers have identified a strikingly large gas giant orbiting a remarkably small red dwarf star — a finding that challenges long-standing assumptions about how planetary systems form. The ...