Hypergiant !

A team of scientists including Dr. Alex Lobel of the ROB, reported they have finalized a thirty years long investigation of a hypergiant star. In that period the surface temperature of this gigantic and extremely bright star quickly rose from five to eight thousand degrees. With this discovery a crucial ‘missing link’ in the evolution of hypergiant stars has been found.

See http://alobel.freeshell.org/press.html or http://www.aanda.org/articles/aa/pdf/2012/10/aa17166-11.pdf