: a star having a very low surface temperature and a red color
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According to this idea, although these objects may look like supersize red stars, their shine is powered not by standard stellar thermonuclear fusion but rather by the relentless funneling of burning-hot plasma into the insatiable maw of a snowballing black hole.—Joseph Howlett, Scientific American, 5 Feb. 2026 Instead, Lohan put her right hand in the shot, showing off a bubble bath pink natural nail polish as well as a small red star tattoo.—Lara Walsh, InStyle, 6 Jan. 2026 Big, hot, blue stars live shorter lives, while tiny, cool, red stars live for much longer.—Stephen Dikerby, The Conversation, 24 Nov. 2025 Beyond the immersive sets, guests can take part in a special Pixar Ball Treasure Hunt, searching for the famous yellow ball with a red star hidden throughout the exhibition — a nod to the Easter egg that appears in many Pixar films.—Alex Ritman, Variety, 9 Nov. 2025 See All Example Sentences for red star