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<h2 class="hd hd-2 unit-title">Preparing for a Spacewalk</h2>
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<h2>6.4.1 Preparing for a Spacewalk</h2>
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<p>Extravehicular activity is a physically and mentally challenging task. Even before stepping out of the spacecraft, preparing for a spacewalk can be an hours-long process that involves suiting up, pre-breathing, collecting tools, and conducting various safety checks. In the following video, Prof. Hoffman gives a personal account of what it takes to get ready for EVA.</p>
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<h2 class="hd hd-2 unit-title">Performing a Spacewalk</h2>
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<h2>6.4.2 Performing a Spacewalk</h2>
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<p style="text-align: center;"><em><span style="font-family: 'Open Sans', Verdana, Arial, Helvetica, sans-serif;">Astronaut Jeff Hoffman performing EVA while secured on the Canadarm during STS-61, the first mission to repair the Hubble Space Telescope (Image credit: NASA)</span></em></p>
<p>The question most commonly asked of astronauts is "What's it like in space?" Well, nothing comes closer to being in space than actually stepping out of an orbiting spacecraft and into the great unknown. As Prof. Hoffman describes in the next video, it is a huge psychological transformation to suddenly feel like a tiny, free-floating satellite in the vast universe. The view, however, is simply breathtaking.</p>
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<h2>6.4.3 The Future of Space Suit Design</h2>
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<p style="text-align: center;"><em><span style="font-family: 'Open Sans', Verdana, Arial, Helvetica, sans-serif;">MIT AeroAstro Professor Dava Newman models the <a href="http://appel.nasa.gov/2012/01/11/building-the-future-spacesuit/">BioSuit</a>, a space suit design that uses mechanical counter pressure instead of traditional gas pressurization</span></em></p>
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<p style="padding-left: 130px;"><em><span style="font-family: 'Open Sans', Verdana, Arial, Helvetica, sans-serif;">Inventor, Science and Engineering: Dava Newman<br />Design: Guillermo Trotti, A.I.A., Trotti and Associates, Inc. (Cambridge, MA)<br />Fabrication: Dainese (Vicenza, Italy)<br />Photography: Douglas Sonders</span></em></p>
<p>Over the past 60 years, space exploration has witnessed humans launching out of the Earth's atmosphere, orbiting our planet at lightning speeds, setting foot on the Moon, and building a multi-national space station that provides a home away from home. You may be wondering, what's next? Will humans eventually land on Mars? Will we establish colonies there? While no one knows for sure, we do know that the future of spaceflight will bring with it major advancements in technology. The following video looks at some possibilities that lie ahead, including the next-generation space suits that may help get us there.</p>
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<h3 class="hd hd-2">Video: The Future of EVA and Space Suit Design</h3>
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