For more than a century, Betelgeuse has looked like a star with a secret. It swells and fades on a six-year rhythm that never quite made sense. The star, about 650 light-years away in space, is old, ...

Graphical depiction of Betelgeuse and the Betelbuddy. Credit: Lucy Reading-Ikkanda/Simons Foundation One of the brightest stars in the night sky, Betelgeuse, may not be on the brink of exploding as a ...

Astronomers have made a groundbreaking discovery that could revolutionize our understanding of the giant red supergiant Betelgeuse. A small companion star, affectionately named the ‘Betelbuddy’, has ...

Betelgeuse’s strange behavior may finally have an explanation: a hidden companion star buried in the dust around the red supergiant. This discovery could explain its mysterious long-term heartbeat and ...

The theory that Betelgeuse had a binary partner dates back to the early 20th century, when early spectroscopic studies hinted at a second object. Over time, the chaotic behavior of the star’s ...

The yearslong dimming and brightening pattern of the huge star Betelgeuse (don’t worry—that’s just the second time we’ve said it!) may be due to a much tinier star orbiting the red supergiant, a team ...

Astronomers have long searched for clues that a hidden companion star sits out of view near the red supergiant star Betelgeuse. Now, they’ve uncovered a new piece of evidence: a trail like the wake ...

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Betelgeuse is one of the brightest stars in the night sky. Credit: Alan Dyer / VWPics / Universal Images Group via Getty Images A brilliant red star beaming through our night sky is Betelgeuse, an ...

One of the brightest stars in the night sky, Betelgeuse, may not be on the brink of exploding as a supernova, according to a new study of the star's brightening and dimming. Instead, recent research ...