Assertion: phosphorus | /r/AtLocation | supernova
Facets:
value: as a byproduct of supernova nucleosynthesis
type: CAUSE
Source sentences:
text: Phosphorus is found organically in sources of bone ash and guano and is also produced in supernovae as a byproduct of supernova nucleosynthesis, where the phosphorus-to-iron ratio from the supernova remnant is believed to be 100 times higher than