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> organic ices – such as frozen carbon dioxide I'm pretty sure that CO2 isn't classified as organic.
by CalChris 9y ago
> organic ices – such as frozen carbon dioxide
I'm pretty sure that CO2 isn't classified as organic.
- paol 9y agoOrganic has a specific meaning in chemistry: https://en.m.wikipedia.org/wiki/Organic_chemistry https://en.m.wikipedia.org/wiki/Organic_chemistry
- a-priori 9y agoYes but in some cases, astronomy uses slightly different definitions of key scientific terms: "metal", for example, means anything other than hydrogen or helium.
- nkoren 9y agoNonsense. Nickel-iron asteroids are called "metallic," because they're largely made out of, well, metal. Stony asteroids are called "carbonaceous" because they've got a lot of carbon. They're very definitely not called "metal". And astronomers believe that the core of Jupiter is both hydrogen and metallic -- hydrogen compressed to the point where it acquires the property of a metal. So: there are many things that are neither hydrogen nor helium nor metal, and a few things which are both hydrogen and metal.
- aexaey 9y agoI think GP meant "metallicity" as a property of stellar objects: https://en.wikipedia.org/wiki/Metallicity https://en.wikipedia.org/wiki/Metallicity
- deleted 9y ago[deleted]
- kbutler 9y ago"Organic" as chiefly of biological origin? Yeah. "Organic" as occurs in nature and beneficial for plants? Sure. "Organic" as compound containing carbon? Yes. "Organic" as compound with at least one carbon-hydrogen bond? Nope. "Organic" as a compound with a significant number of carbon atoms? Nope.