The L5 Society founded by the fans of the Space Colonization and Industrialization work of a physicist born in which year ?
National Space Institute:  It has since merged, in 1987, with the L5 Society founded by fans of the Space Colonization and Industrialization work of Dr. Gerard K. O'Neill, to become the present-day National Space Society. Gerard K. O'Neill: Gerard Kitchen O'Neill (February 6, 1927 – April 27, 1992) was an American physicist and space activist.
i don't know