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New Star Discovery May Explain Betelgeuse's Dimming

10/11/2025

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Summary

Story summary

Carnegie Mellon University researchers confirmed Betelbuddy, the companion star of Betelgeuse.
Betelbuddy is a young star with about 1.5 solar masses.
The discovery relied on advanced X-ray observations, notably from the Gemini North Telescope.
The findings were published on October 8, 2025.
The study suggests Betelbuddy may influence Betelgeuse's dimming cycles by clearing dust that obstructs its light.

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Story summary

Carnegie Mellon University researchers confirmed Betelbuddy, the companion star of Betelgeuse.
Betelbuddy is a young star with about 1.5 solar masses.
The discovery relied on advanced X-ray observations, notably from the Gemini North Telescope.
The findings were published on October 8, 2025.
The study suggests Betelbuddy may influence Betelgeuse's dimming cycles by clearing dust that obstructs its light.