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JonClarke
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Although in the past the Planetary Society has taken the attitude that robotic exploration is more cost effective than direct human exploration. That is not the case now. Just three items of PS action:<br /><br />A petition to the US congress in favour of human exploration of Mars http://www.planetary.org/aimformars/index.html<br /><br />A workshop on the future of human space exploration http://www.planetary.org/workshop/<br /><br />A major report on extending human presence in the solar system http://planetary.org/aimformars/study-report.pdf - the list of authors repays study.<br /><br />Jon <div class="Discussion_UserSignature"> <p><em>Whether we become a multi-planet species with unlimited horizons, or are forever confined to Earth will be decided in the twenty-first century amid the vast plains, rugged canyons and lofty mountains of Mars</em> Arthur Clarke</p> </div>