... Tonight's Sky . ... Observing . ... Star Atlas . ... stars . ... Astronomy for Kids . ... Mysterious hot spots observed in Betelgeuse . ... RELATED TOPICS: STARS | ... It also reveals two hot spots within the outer atmosphere and a faint arc of cool gas even farther out beyond the radio surface of the star. The hot spots appear on opposite sides of Betelgeuse, separated by about half the star s visual diameter. ... Only registered members of Astronomy.com are allowed to comment on this article. ...