NEBULA - cloud
of dust and gas
(H) pulled
together by
gravity
PROSTAR - Energy
pushing out and gravity
pushing in. Nuclear
fusion starts (H --> He)
MAIN SEQUENCE - most of its life, H -- He
(nuclear fusion). Equilibrium (balance)- The
amount of gravity pushing in is equal to the
amount of energy pushing out
H --> He,
He --> C, Fe
SUPER GIANT
SUPER NOVA
(big explosion)
NEUTRON STAR - Core of dead star (Fe)
BLACK HOLE - Gravity
intense, only happens to the
very large start (Fe)