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+0000</pubDate><guid>https://www.smithsonianmag.com/smart-news/could-running-around-a-wall-of-death-help-astronauts-stay-in-shape-on-the-moon-180984266/</guid><enclosure length="659371" type="image/jpeg" url="https://th-thumbnailer.cdn-si-edu.com/ytlnPntheiTal0aGLCJx7F0usEc=/420x240/filters:focal(964x726:965x727)/https://tf-cmsv2-smithsonianmag-media.s3.amazonaws.com/filer_public/91/83/9183dc9b-7d7d-45f2-8b30-dae3edd7fb45/rsos231906f003.jpg"/></item><item><title>Volunteers Are Spending 60 Days in Bed to Help Astronauts Stay Healthy in Space</title><link>https://www.smithsonianmag.com/smart-news/volunteers-are-spending-60-days-in-bed-to-help-astronauts-stay-healthy-in-space-180982238/</link><description>For two months, the group of 12 men must eat, sleep, exercise, bathe and use the toilet while at least one shoulder is touching the bed</description><pubDate>Wed, 24 May 2023 17:50:22 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