The story of the star Sanduleak -69
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202
t = 10 sec
Neutrinos have escaped from the core. They are radiated into space, carrying most of the energy released in the collapse.
The shock wave propagates out through the layers of the star.
Next Stage
Davison E. Soper, Institute of Theoretical Science, University of Oregon, Eugene OR 97403 USA soper@bovine.uoregon.edu