The Death of Stars (Astronomy)

Recall cards on how stars end their lives. Low-mass deaths: the Chandrasekhar limit, electron-degenerate white dwarfs, their carbon-oxygen-neon composition and extreme density, and their fade to black dwarfs. The explosive finish of massive stars: the onion-shell interior fusing up to iron, core collapse into neutrons and neutrinos, and the type II supernova that seeds space with the heaviest elements. Observed supernovae from SN 1006 to SN 1987A. Neutron stars and pulsars: their size, density, and surface gravity, Jocelyn Bell's 1967 discovery, the lighthouse model, and magnetars. Binary evolution: novae, type Ia supernovae, and millisecond pulsars. And the gamma-ray bursts, short from merging neutron stars and long from collapsing massive stars.