| polycyclic aromatic hydrocarbon(noun, expression, study, treatment, science) |
| presolar grain(noun, expression, form, study, science) |
| presolar stardust grain(noun, expression, form, study, science) |
| primitive meteorite(noun, expression, form, study, science) |
| propionaldehyde(noun, expression, study, treatment, science) |
| protoplanetary disk(noun, expression, study, treatment, science) |
| pyrene(noun, study, treatment, science, knowledge) |
| short-lived nuclide(noun, expression, form, study, science) |
| solar nebula(noun, expression, form, study, science) |
| solid material(noun, expression, form, study, science) |
| spectral signature(noun, expression, study, treatment, science) |
| spectroscopic signature(noun, expression, study, treatment, science) |
| stardust(noun, form, study, science, field) |
| starting material(noun, expression, study, treatment, science) |
| stellar wind(noun, expression, study, treatment, science) |
| supernova(noun, form, study, science, field) |
| terrestrial rock(noun, expression, form, study, science) |
| terrestrial sample(noun, expression, form, study, science) |
| ultraviolet light(noun, expression, study, treatment, science) |
| universe(noun, form, study, science, field) |