A thread of optimistic science/fiction art.
First up, Bryan Larsen's joyful inspiration: https://www.bryanlarsen.com/gallery/
Paul Calle had breakfast with the Apollo 11 astronauts on launch day and sketched them preparing for the launch.
SpacePretzel creates the kinds of landscapes that fertilize the imagination.
Daniel Špaček, an illustrator from planet Earth. Charm and whimsy!
Jedidiah Dore does colorful, breezy illustration in pen and watercolor. He's a regular illustrator of goings ons at NASA. https://www.jedidore.com/space-exporation
I haven't been able to find the artist responsible for these postage stamps from Central African Republic in the 1980s. But look at them! Beautiful stuff! (If you know the artist, reach out.)
Lucien Rudaux was an astronomer and artist who did accurate space-themed paintings in the 1920's and 30's.
So, not only was Apollo 12 astronaut Alan Bean a fine artist, but so was cosmonaut Alexei Leonov (The first person to perform a spacewalk), He brought colored pencils to sketch with on orbit and after returning to Earth he turned them into paintings, sometimes with collaborator Andrei Sokolov. https://gizmodo.com/the-first-spacewalker-and-his-painter-friend-created-th-1729276737
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