A discovery of binary stars could be the first step in building a more complete picture of how our galaxy formed, according ...

According to the equations that govern black holes, the larger one of these cosmic behemoths is the lower its average density ...

Not all stars are created equally. Astronomers believe that the first stars to form after the Big Bang were mostly made of ...

For science-fiction enthusiasts, that’s a bit depressing. Space is big, and while the speed of light is incredibly fast to us ...

Astronomers have detected one of the darkest objects ever seen at a record cosmic distance—only with the assistance of ...

Astronomers have detected a mysterious dark object in the distant universe — and its size has them fascinated.

If there is an absolute law in the universe, it’s that nothing can travel faster than the speed of light. Space is big, and ...

Scientists using a global array of radio telescopes have detected the universe’s lowest-mass dark object by observing how it ...

Galaxies "blazing with technosignatures" could suggest the existence of a "large number" of "different metasocieties." ...

On the night of Oct. 5, 1923, Edwin Hubble observed a strange star that flickered in intensity at regular intervals. The star ...

Buried in radio data, astronomers found something vast — a galaxy stretching more than 16 million light years. This is the ...

Astronomy is, in essence, an exercise in inference. We cannot touch the stars, nor scoop up galaxies in a lab. Instead, we ...