Betelgeuse, one of the most luminous stars visible from Earth, continues to surprise astronomers. The red giant’s brightness ...

With some of its light blocked comes a scarce opportunity for astronomers with millisecond accuracy to map the shape and surface of Betelgeuse. That’s because its light will be relatively dim.

Betelgeuse has been a favorite among amateur astronomers for many years. However you pronounce it, its unexpected dimming draws even more attention to this red supergiant variable star in Orion.

New images created by the Hubble Space Telescope show that Betelgeuse — one of the brightest stars visible from Earth — wasn’t dimming because it was about to explode, but because there was ...

Betelgeuse, the left “shoulder” of Orion, has always been a star of intrigue. Look at it long enough (and we mean generations-long), and you’ll notice its strange pattern: dimming and ...