Molecules
The following tables list molecules that have been detected in the interstellar medium, grouped by the number of component atoms. If there is no entry in the Molecule column, only the ionized form has been detected. For molecules where no designation was given in the scientific literature, that field is left empty. Mass is given in Atomic mass units. The total number of unique species is listed in parentheses in each section header.
Read more about this topic: List Of Interstellar And Circumstellar Molecules