Ground breaking space-art from the 1940s.
Above: Painting of Saturn as imagined from its moon Titan (1944)
Below: The imagined surface of Mars (1949), showing the persistence of the 'Martian Canals' ideas of astronomer Percival Lowell in the late 1800s.
Both paintings by Chesley Bonestell (1 January 1888 - 11 June 1986)
Shipscook

I remember these from books I had growing up in the sixties, they really fired my imagination
Thanks for sharing