How far the Milky Way's disk extends has long been difficult to define—it doesn't end sharply, but fades away gradually at its outer edges. Now, for the first time, an international team of ...

This shimmering region of star-formation, a close-up of the Trifid Nebula about 5,000 light-years from Earth, was captured in ...

Did 29 Cygni b form like a planet, or like a star? Or are the two not quite as distinct as previously believed?

Studying the star, called SDSS J0715-7334, could give astronomers insights into how the universe's first stars were formed ...

A faint glow of helium, hanging near one of the earliest known galaxies, may be the clearest sign yet that astronomers have ...

Baby stars release excess energy by ejecting magnetic “sneezes,” forming giant warm gas rings, new ALMA observations reveal.

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 ...

A computational model of the early-to-present-day Universe predicts that some of the first stars formed in structures that challenge conventional classification. Read the paper: The emergence of ...

Webb finds a massive planet, 29 Cygni b, orbiting a nearby star, offering new clues about how even the largest planets grow ...

How far the Milky Way's disc extends has long been difficult to define — it doesn't end sharply, but fades away gradually at its outer edges. Now, for the first time, an international team of ...

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 ...