My black and white and grey digital sketch of Cecilia Payne Gaposchkin. Above it, a citation from her thesis: 'The application of physics in the domain of astronomy constitutes a line of investigation that seems to possess almost unbounded possibilities'. Slightly in the background sketches of the energy levels in the hydrogen atom (orbital co-sketched) and a star with sun spots and loop/protuberances. Name and citation underlines in red, everything else is black and white.
https://files.mastodon.social/media_attachments/files/112/418/661/414/461/154/original/d252d962819e6760.png