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Mark H
Spectacular Hypergiant Star Found Passing Through "Forbidden Zone" - http://www.dailygalaxy.com/my_webl...
Spectacular Hypergiant Star Found Passing Through "Forbidden Zone"
Spectacular Hypergiant Star Found Passing Through "Forbidden Zone"
"A European research team has discovered an extraordinary hypergiant star as it went through while it went through an extremely rare stage called the 'Yellow Evolutionary Void'. The team have found that the surface temperature of the super-luminous star HR 8752 increased by about 3000 degrees in less than three decades. The discovery marks an important step closer to unravelling the evolution of the most massive stars. The discovery is an important step forward to resolve the enigma of the hypergiants, the most luminous and massive stars of the Galaxy. Hypergiants can shine millions of times brighter than the Sun, and they often have a diameter several hundred times greater." - Mark H from Bookmarklet
"Between 1900 and 1980 the atmospheric temperature of HR 8752 stayed almost constant around 5000 degrees, but it rose very rapidly to 8000 degrees between 1985 and 2005. The team calculates that the stellar radius decreased from 750 to 400 times that of the Sun. In 1985 the team embarked on a long-term spectroscopic observing program when it found that the remarkable hypergiant was exactly at the border of the 'Yellow Void' and started to cross over. " - Mark H