Astronomers Capture Best-Ever Glimpse of Betelgeuse's Hidden Companion Star

Astronomers have obtained the clearest images yet of a companion star orbiting Betelgeuse, the famous red supergiant, confirming decades of theoretical speculation about the star's hidden partner.

Decades in the making

Researchers had long suspected Betelgeuse hosted a companion based on subtle brightness variations, but direct imaging had proven elusive due to the overwhelming brightness of the supergiant itself, scientists said.

The new observations were captured using the Very Large Telescope, employing advanced imaging techniques capable of distinguishing the faint companion from Betelgeuse's glare.

• The companion star had been theorised for decades before this direct observation
• Imaging was made possible using the Very Large Telescope
• The findings help explain some of Betelgeuse's unusual brightness variations

Implications for a famous star

Betelgeuse, located in the constellation Orion, has drawn significant public and scientific attention in recent years due to unusual dimming events that sparked speculation about its eventual supernova.

Researchers said confirming the companion star's existence helps explain some of the irregular brightness patterns observed in previous years, refining models of the star's behaviour.

The team said further observations are planned to characterise the companion's mass, orbit, and potential influence on Betelgeuse's eventual fate.