1973
January 10–12
LSI sponsors and hosts the conference Geophysical and Geochemical Exploration of the Moon and Planets.
April 6
The Pioneer 11 mission to Jupiter and Saturn launches.
May 14
Skylab, the first U.S. space station, launches.
July 15
David Strangway is appointed LSI Interim Director.
September 1
James Head is appointed LSI Interim Director.
November 3
Mariner 10 launches toward Venus and Mercury.