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cometThere is a hazy and bright "head"——Cometary head。The comet head consists of two parts, with a dense and bright centerCometary nucleusAnd foggy cladding--Comet。
CometbrightnessLarge, dense part of material, composed of brightCentral starIt is composed of two parts: the nucleus of Comet X and the hazy coma around it.
Observed from comet headsatomandmoleculeAs follows: O, OH, H2O, C,C2，C3，CH，CN，CO，CS，HCN，CH3，CN，NH，NH2，Na，Fe，K，Ca，V，Cr，Mn，Co，Ni，Cu。
Comets are divided into heads andCometary tailTwo parts.The comet head consists of the nucleus, hairComaIt consists of three parts.The comet nucleus is formed byFrozen matterThe composition of the core and the mass of the comet are mainly concentrated here.A comet is a cloud like envelope outside the nucleus.The coma is caused byhydrogen atomEnormousGas layer。
