For more than two decades, the quasar PHL 1811 has been considered the prototype of a rare class of "intrinsically X-ray weak ...

The stars of the Pleiades cluster, the most well-known of which are referred to as the "Seven Sisters.". | Credit: Westend61/Getty Images Astronomers have discovered that the Seven Sisters of the ...

Scientists have theorized that there may be two Betelgeuse stars for 100 years.

Astronomers have detected spacetime itself being dragged and twisted by a spinning black hole for the first time. The discovery, seen during a star’s violent destruction, confirms a prediction made ...