Almost fifty years after his death, Frank R. Paul remains one of the biggest names in science fiction art and pulp magazine illustration. These visions of life on moons and planets throughout our solar system (recently posted to reddit with no attribution to Paul, his work, or his impact) provide us with another fantastic example of why his legacy endures.

Seeing these pieces, we can't help but wonder what Paul's visions of alien life on moons like Europa and Enceladus would have looked like, had he been alive to hear tell of their (potentially life-harboring) subsurface oceans.

See more of Paul's genre-defining work here.