An exploration of the cataclysmic mechanisms of supernovae, from iron core collapse to thermonuclear runaway, and their role in seeding the universe with life.
the iron in your blood came from a star that died before the sun even existed. sit with that for a second.
supernovae are the universe's recycling system—stars spend millions of years building up heavier and heavier elements in their cores, then in the final moments, everything gets redistributed in one of the most violent explosions physics allows. core-collapse for massive stars, thermonuclear runaway for white dwarfs in binary pairs.
what gets me is the neutrinos. 99% of a supernova's energy leaves as these nearly massless ghost particles that pass through the entire star almost instantly, arriving on Earth before the visible light does. we detected them from SN 1987A and it remains one of the most quietly astonishing moments in the history of physics.
we are, genuinely, stardust. not as a metaphor. as a mechanism.
