Hubble tracks Betelgeuse companion carving dense wake in giant star atmosphere
Using NASA's Hubble Space Telescope with ground-based observatories, astronomers have traced how Betelgeuse's recently identified companion star, Siwarha, disturbs gas in the red supergiant's extended atmosphere and produces a dense wake of material. The work, led by researchers at the Center for Astrophyphysics | Harvard and Smithsonian (CfA), links this wake to puzzling changes in Betelgeuse's