A Proxy For Hydrogen In Space?

a: Carbon monoxide ~
b: a lighthouse

What: "The hydrogen spectra get lost on the way, but carbon monoxide is like a lighthouse - its spectra are observed more often than those of any other molecule," Szalewicz says. "You can indirectly tell what the density of hydrogen is from the carbon monoxide spectra."

Writer: Krzysztof Szalewicz, professor of physics
Date: Jul 22 2013 7:19 PM

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