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Thursday, January 09, 2003

Large Star Undergoing Eruptions

"The star did an amazing thing," said Andrea Dupree, an astronomer at the Harvard-Smithsonian Center for Astrophysics. "We were exceptionally lucky to witness a stunning explosion."
Over a 200-day period, Rho Cassiopeia, a hypergiant with 20 to 40 times the mass of the sun, became brighter by 20 per cent, released a flare that made it one of the brightest stars in the universe, and then it dimmed, dropping in brightness by two magnitudes.
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