Astronomers have recently identified a cosmic structure so vast that it challenges our understanding of the universe’s scale.

Space. It's really, really big. How big is it? Well, according to astronomers, the observable universe is around 92 billion light-years in diameter, but that's all we can see (hence the word ...

Stars are the original nuclear fusion reactors. As it evolves, a star continuously fuses hydrogen, helium, and—if it becomes big enough—heavier elements, releasing the energy created into space as ...

Astronomers may be closer than ever to solving one of cosmology’s biggest mysteries: what the universe’s very first stars ...

The discovery of a superheated star factory that forms stars 180 times faster than our own Milky Way could help solve a ...

Astronomers have observed a primeval star that they believe to be the most “pristine” object in the universe. A team led by Alexander Ji at the University of Chicago said the star, named SDSS ...

The discovery indicates how galaxies could have grown quickly when the universe was very young, solving a long-standing ...

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 ...

A black hole ate its way into the record books after devouring a star and creating a celestial outburst that burned with the ...

Researcher Matthew Graham said scientists didn't initially "believe the numbers about the energy" emitting from the cosmic ...