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Molecules in stars
Stellar molecules are molecules that exist or form in or around stars. Such formations can take place when the temperature is low enough for molecules to form, otherwise the stellar matter is restricted to atoms (chemical elements) in the forms of gas or – at very high temperatures – plasma.
==Background==
Matter is made up by atoms (formed by protons and other subatomic particles). When the environment is right, atoms can join together and form molecules, which give rise to most materials studied in materials science. But certain environments, such as high temperatures, don't allow atoms to form molecules. Stars have very high temperatures, primarily in their interior, and therefore there are few molecules formed in stars. For this reason, a chemist (who studies atoms and molecules) would not have much to study in a star, so stars are better explained by physicists. However, low abundance of molecules in stars isn't equated with no molecules at all. Published scientific papers from 1990s show evidence of existence of stellar molecules.
抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』
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