Sensing Suns: Astronomers Accurately Measure the Temperature of Red Supergiant Stars

Red supergiants are a class of star that end their lives in supernova explosions. Their lifecycles are not fully understood, partly due to difficulties in measuring their temperatures. For the first time, astronomers develop an accurate method to determine the surface temperatures of red supergiants. Stars come in a wide range of sizes, masses...

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Betelgeuse Suns