Theorists divide supernovae into two types:
\n\t\t\t\tcore-collapse supernovae and thermonuclear detonation
\n\t\t\t\tsupernovae.\u00a0 The first type occurs when a massive star
\n\t\t\t\texhausts its thermonuclear fuel.\u00a0 The second type occurs
\n\t\t\t\twhen a white dwarf experiences a thermonuclear runaway
\n\t\t\t\tafter becoming gravitationally unstable.\u00a0 These rare but
\n\t\t\t\tintense explosions can be seen across the universe.\u00a0 They
\n\t\t\t\tare responsible for all of the heavy elements in the universe,
\n\t\t\t\tand are therefore necessary for human life.<\/p>\n","protected":false},"excerpt":{"rendered":"
Theorists divide supernovae into two types: core-collapse supernovae and thermonuclear detonation supernovae.\u00a0 The first type occurs when a massive star exhausts its thermonuclear fuel.\u00a0 The second type occurs when a white dwarf experiences a thermonuclear runaway after becoming gravitationally unstable.\u00a0 … Continue reading