Pinpointing a Milepost Marker Star that Opened the Realm of Galaxies At the dawn of the 20th century, astronomers faced a ...

A Yale-led team of astronomers has detected an intensely brightening and dimming quasar that may help explain how some ...

Taking advantage of a cosmic "double lens," astronomers resolved more than 40 individual stars in a galaxy so far away its light dates back to when the universe was only half its present age.

Astronomers have detected an intensely brightening and dimming quasar that may help explain how some objects in the early universe grew at a highly accelerated rate. The discovery is the most distant ...

NASA's James Webb Space Telescope has captured a unique image that revealed 44 individual stars in a galaxy 6.5 billion light ...

For humans, the most important star in the universe is our Sun. The second-most important star is nestled inside the ...

Quasars are among the oldest, brightest objects in the universe. Formed from active galactic nuclei (AGN)—areas at the center of galaxies ... up to a million light years away from the central ...