In 1994 the famous British space artist David A. Hardy created several retrofuturistic illustrations of a human base on Phobos, the closest of two natural Martian moons, in front of a terraformed Mars. The illustrations were created as cover art for two separate books. More of Hardy's Mars art "Terraforming Mars" as cover art for Arthur C. Clarke's book "The Snows of Olympus" (1994):
"Terraformed Mars" as cover art (there are several slightly different versions of this illustration) for Carl Sagan's book "Pale Blue Dot: A Vision of the Human Future in Space" (1994):
