EntityQ142939· pop 15· linked from 43 articlesLyman-alpha forestSign in to saveastronomical spectroscopic termConnectionsabsorption spectroscopyEntityhydrogenEntitycarbonEntityheliumEntitygalaxyEntitysiliconEntityInternational Standard Book NumberEntityouter spaceEntityultraviolet radiationEntitydigital object identifierEntitywavelengthEntityInternational Standard Serial NumberEntitydark matterEntityquasarEntityredshiftEntityångströmEntityelectromagnetic spectrumEntityfingerprintEntitybibcodeEntityQ118398EntityCategories1970 in scienceAstronomical spectroscopyPhysical cosmological concepts