Surface features of a distant star — Science News, December 21, 1974 & December 28, 1974
Thanks to high-speed photography and modern data processing, [astronomers] are beginning to be able to suppress the effects of [a star] twinkling…. The star involved is one of the most prominent in the sky, big, red Betelgeuse.… What was found are large-scale hot and cold regions, that may be convection currents in the star’s atmosphere.
Update
Powerful ground- and space-based telescopes have since let scientists observe the surfaces of giant stars in the Milky Way, including Betelgeuse and R Doradus, in even greater detail. Those observations confirmed that surface spots are related to
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