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#Mon Aug 09 11:53:29 CEST 2010
Text__7LQfEKObEd-WfYQ0GneCwQ_title=The explosion
Text__7LQfEKObEd-WfYQ0GneCwQ_text=A star located in the outer regions of M81, probably a red supergiant star, ended its life on March 28 1993. <br> At the temperature of 100 million Kelvin, its core collapsed under the weight of the heavy elements, like iron, that the star itself had been producing during all its life.