Full record for planetary engineering n.

Definition large-scale modification of an entire planet.
OED requirements antedating 1936
Earliest cite Jack Williamson 'The Cometeers'
Comment Mike Christie submitted a cite from a 1967 reprint of Heinlein's 1950 "Farmer in the Sky". Rick Hauptmann submitted a 1936 cite from Jack Williamson's "The Cometeers". (Earliest cite in the OED: 1951)
Last modified 6 July, 2008

Citations for planetary engineering n.

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1936 J. Williamson in Astounding Stories July 129/1 Planetary engineering is expensive, Bob‥especially when the equipment would have to be brought so far. It would have been nearly impossible for any one to develop such a remote asteroid secretly.