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>https://www.livescience.com/graphene-hides-rare-magnetism.html
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Extraterrestrial
PAHs are prevalent in the interstellar medium (ISM) of galaxies in both the nearby and distant Universe and make up a dominant emission mechanism in the mid-infrared wavelength range, containing as much as 10% of the total integrated infrared luminosity of galaxies.[citation needed] PAHs generally trace regions of cold molecular gas, which are optimum environments for the formation of stars.[citation needed]
NASA's Spitzer Space Telescope includes instruments for obtaining both images and spectra of light emitted by PAHs associated with star formation. These images can trace the surface of star-forming clouds in our own galaxy or identify star forming galaxies in the distant universe.[34]
In June 2013, PAHs were detected in the upper atmosphere of Titan, the largest moon of the planet Saturn.[35]