Stellar abundances
Interstellar abundances
Nuclear abundances
Cosmic abundances
Solar abundances
Metallicity
Galaxy abundances
Frozen in elements
Astrochemistry
Abundance ratios
Galactic abundances
Underabundances
Chemical abundances
The relative amount of a given chemical element or chemical compound with respect to another element or compound in a given sample.
Elemental abundances
Elemental composition
Element abundance
Chemical abundance
Chemical composition
Overabundances
Isotopic abundances
Intergalactic abundances