1952 - Wernher von Braun discusses the technical details of a manned exploration of Mars in The Mars Project.
1953 - Colliers Magazine publishes a series of articles on man's future in space, igniting the interest of people around the world. The series includes numerous articles by Ley and von Braun, illustrated by Chesley Bonestell.
... and 192 families residing in the town. The population density is 245.1/km² (635.7/mi²). There are 545 housing units at an average density of 167.0/km² ...