Massive Star Mystery: Do They Explode?

From SPACE.com:

Some of the most massive stars might not explode as supernovae, a new study suggests. Rather, researchers speculate, they simply collapse into black holes or if they do generate explosions, they're not as intense as the deaths of less massive stars. The claim has been questioned by some astronomers, however. How stars die depends in part on their mass. Our sun, for example, will swell into a red giant before becoming a white dwarf. More massive stars explode in massive supernova explosions. The new finding suggests that stars of around 20 to 30 times the mass of the sun might not explode at all, but rather collapse to form black holes.

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