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Mars Direct: A plan for a manned Mars mission created by NASA engineers Robert Zubrin and David Baker in 1990, later expanded upon in Zubrin's 1996 book The Case for Mars.
He is also active in the Mars Society, and is the co-editor with Robert Zubrin of two books of essays and articles related to exploring Mars.
The book is also notable for including a publication of Robert Zubrin's Mars Direct mission architecture (first formulated in 1990), which was soon expanded into a book of its own, The Case For Mars: The Plan to Settle the Red Planet and Why We Must, and which provided the impetus for the founding of the Mars Society.
She has held professional memberships in the American Association for the Advancement of Science (AAAS), The British Society for the History of Science, The National Space Society which was founded by Wernher von Braun, The Planetary Society, The Mars Society founded by Robert Zubrin, and is a Registered Consultant for the Science & Entertainment Exchange run by the National Academy of Sciences.