Astronomers Suggest Betelgeuse's Brightness Changes Linked to Companion Star

A new study proposes that Betelgeuse may have a companion star clearing dust, causing the star's brightness to fluctuate.

Researchers have ruled out intrinsic causes for Betelgeuse's brightness variations, suggesting a companion star is responsible.
The proposed 'Betelbuddy' star may act like a 'snowplow,' clearing dust and affecting Betelgeuse's luminosity.
Historical observations of Betelgeuse's brightness changes date back over two millennia, with recent significant dimming noted in 2019.
Simulations indicate Betelbuddy could be a sun-like star, though some speculate it might be a neutron star.
Scientists plan to seek direct evidence of Betelbuddy during a potential observation window in December.