Mars Direct - Research Article from Macmillan Science Library: Space Sciences

This encyclopedia article consists of approximately 4 pages of information about Mars Direct.
This section contains 1,143 words
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A Clever Synthesis

Mars Direct originated in a Martin Marietta-sponsored effort to develop plans for U.S. President George H. W. Bush's Space Exploration Initiative (1989-1993), which aimed to return humans to the Moon and land the first astronauts on Mars by 2019. Bush's initiative failed because of excessive cost and lack of political support, but it provided an opportunity to revive many old Moon and Mars exploration ideas. Mars Direct, for example, is a cost-saving synthesis of concepts dating back to the 1950s.

Old concepts in Mars Direct include manufacturing propellants on Mars for the trip home to Earth; splitting the expedition between cargo and crew spacecraft; and a 500-day stay on Mars for the first expedition. The last idea allows the crew to wait for Mars and Earth to move into positions in their orbits around the Sun and enable a propellant-saving low-energy voyage back to Earth...

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This section contains 1,143 words
(approx. 4 pages at 300 words per page)
Buy the Mars Direct Encyclopedia Article
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Macmillan Science Library: Space Sciences
Mars Direct from Macmillan Science Library: Space Sciences. Copyright © 2001-2006 by Macmillan Reference USA, an imprint of the Gale Group. All rights reserved.
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