Iron’s abundance in rocky planets like Earth is due to its abundant production during the runaway fusion and explosion of type Ia supernovae, which scatters the iron into space.
Monroe died between 8:30 p.m. and 10:30 p.m. on August 4; the toxicology report showed that the cause of death was acute barbiturate poisoning. She had 8 mg% (milligrams per 100 milliliters of solution) chloral hydrate and 4.5 mg% of pentobarbital (Nembutal) in her blood, and 13 mg% of pentobarbital in her liver.