Star clusters in Hurcules from the Trouvelotastronomical drawings (1881-1882) by E. L. Trouvelot (1827-1895) https://www.rawpixel.com/image/283674/free-illustration-image-space-stars-etienne-leopold-trouvelotFree Image from public domain licenseStar clusters in Hurcules from the Trouvelot illustration wall art print and poster. https://www.rawpixel.com/image/306563/free-illustration-image-vintage-science-northern-lights-naturalView license