National Space Institute

National Space Institute logo which remained unchanged when NSI merged with the L5 Society to become the present-day National Space Society
Wernher von Braun (1912-1977), founder of the National Space Institute, forerunner of the present-day National Space Society

The National Space Institute was a space advocacy group, the first of its kind, established by Wernher von Braun to help maintain the public's support for the United States space program. It has since merged, in 1987, with the L5 Society founded by fans of the Space Colonization and Industrialization work of Gerard K. O'Neill, to become the present-day National Space Society.