https://creativecommons.org/publicdomain/zero/1.0/https://www.rawpixel.com/image/13970734Edit ImageSaveSaveEditCropCustom TextAstronomy: an atmospheric condition producing sun dogs, giving the effect of two suns. Engraving by F.R. Hay, 1820, after W.M. Craig.Original public domain image from Wellcome CollectionMorePublic DomainFree CC0 image for Personal and Business useInfoView CC0 LicenseJPEGSmall JPEG 1200 x 755 px | 300 dpiLarge JPEG 3500 x 2203 px | 300 dpiFree DownloadAstronomy: an atmospheric condition producing sun dogs, giving the effect of two suns. Engraving by F.R. Hay, 1820, after W.M. Craig.More