title: Astronomy: Cosmic fog and smog.
authors.affiliation: Space Telescope Science Institute, Baltimore, Maryland 21218, USA.
authors.forename: Molly S
authors.initials: MS
authors.lastname: Peeples
mesh_terms: D018559:Exobiology; D005118:Extraterrestrial Environment / Q000737:chemistry; D055608:Galaxies / Q000737:chemistry*; D005740:Gases / Q000032:analysis / Q000737:chemistry; D019369:Life; D008670:Metals / Q000032:analysis / Q000737:chemistry; D016083:Planets; D055609:Stars, Celestial / Q000737:chemistry
chemical_list: D005740:Gases; D008670:Metals