NASA's SDO Sees Solar Flares. Original from NASA. Digitally enhanced by rawpixel. https://www.rawpixel.com/image/440162/free-photo-image-galaxy-sun-nasaFree Image from public domain licenseDegree of Ossification of a Five-Month-Old Fetus (Degré d'ossification d'un Foetus de cinq mois) by Unknown https://www.rawpixel.com/image/8964041/photo-image-person-art-watercolorFree Image from public domain license