So how many stars are there? Given all of the above, astronomers estimate that the Milky Way contains around 100 billion stars, and there are at least 100 billion galaxies in the observable universe.

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

The James Webb Space Telescope's latest image shows eight spectacular examples of gravitational lensing, a phenomenon that ...

From GPS to innovations in computing and optics, technologies developed for space research touch nearly every aspect of ...

Exoplanet hunters Christopher Watson and Annelies Mortier explain the long search for a 'twin Earth' capable of sustaining ...

The James Webb Space Telescope (JWST) continues to deliver awe-inspiring views of the cosmos and the art world has taken ...

A new theory suggests dark matter and dark energy may be illusions, caused by the gradual weakening of nature’s fundamental ...

What is the biggest object in the universe? Learn more about the biggest objects in the universe, including galaxies, galaxy clusters, and dark matter.

On October 6 1995, at a scientific meeting in Florence, Italy, two Swiss astronomers made an announcement that would transform our understanding of the universe beyond our solar system. Michel Mayor ...

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

A controversial prediction about black holes and the expansion force of the universe could explain a cosmology mystery ...

The first fast radio burst, or FRB, was discovered in 2007 in archival data collected back in 2001, and scientists were ...