Fact Sheet
Home of the Whoppers
An artist's concept shows a star cluster filled with the glow of red supergiant stars. At left, one of the stars has already exploded as a supernova. Red supergiants are the largest and most massive stars in the galaxy, and most will die in titanic explosions. Astronomers have discovered two clusters that, combined, contain about 40 red supergiants -- about 20 percent of all the known red supergiants in the galaxy. [NASA/ESA/A. Schaller (STScI)]
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