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

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 ...

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 ...

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*Video shows images of faraway galaxies. (NewsNation) — Astronomers have discovered the strongest evidence yet that famous star Betelgeuse has a companion. Using the Very Large Telescope in Chile, ...