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Betelgeuse Has A CompanionStar - Astronomers See It For First Time

2025-09-19 8 Dailymotion

The companion star of Betelgeuse, seen for the first time by the Gemini North Telescope.

"This discovery answers the millennia-old question of why this famous star experiences a roughly six-year-long periodic change in its brightness," according to NOIRLab.

Credit: International Gemini Observatory/NOIRLab/NSF/AURA/E. Slawik/ESO/L. Calçada/T. Matsopoulos
Image Processing: M. Zamani (NSF NOIRLab)
Motion graphics: Mik Garrison
Music: Never Alone/Never Dark - Mik Garrison