<div class="grid grid-cols-article-mobile md:max-w-[750px] md:grid-cols-article md:max-w-screen-sm" data-article-body="true"><p class="col-body mb-4 leading-7 text-[18px] md:leading-8 break-words min-w-0 charcoal-color"><i>When you buy through links on our articles, Future and its syndication partners may earn a commission.</i></p><figure class="relative col-body mb-4"><div class="relative"><img alt=" A person wearing a white spacesuit with a clear helmet kneels down to pick up a rock at the bottom of a large sandy pool with two people wearing dark swimsuits on either side of them. " loading="lazy" width="960" height="540" decoding="async" data-nimg="1" class="fig-image-round" style="color:transparent" src="https://s.yimg.com/ny/api/res/1.2/hkd5ro9e2xHTT4s5fIFPaA--/YXBwaWQ9aGlnaGxhbmRlcjt3PTk2MDtoPTU0MA--/https://media.zenfs.com/en/space_311/70c0fba5140317d2d8af093c258c3391"><button aria-label="View larger image" class="group absolute bottom-3 right-3 size-10 md:size-[50px] lg:inset-0 lg:size-full lg:bg-transparent" data-ylk="elm:expand;itc:1;sec:image-lightbox;slk:lightbox-open;"><span class="absolute bottom-0 right-0 rounded-full bg-white p-3 opacity-100 shadow-elevation-3 transition-opacity duration-300 group-hover:block group-hover:opacity-100 md:p-[17px] lg:bottom-6 lg:right-6 lg:bg-white/90 lg:p-5 lg:opacity-0 lg:shadow-none"><svg viewbox="0 0 22 22" aria-hidden="true" class="size-4 lg:size-6" width="22" height="22"><path d="M12.372.92c0-.506.41-.916.915-.916L21 0l-.004 7.712a.917.917 0 0 1-1.832 0V3.183l-6.827 6.828-1.349-1.348 6.828-6.828h-4.529a.915.915 0 0 1-.915-.915M1.835 17.816l6.828-6.828 1.349 1.349-6.829 6.827h4.529a.915.915 0 0 1 0 1.831L0 21l.004-7.713a.916.916 0 0 1 1.831 0z"></path></svg></span></button><dialog aria-label="Modal Dialog" aria-modal="true" class="fixed inset-0 z-[4] size-full max-h-none max-w-none bg-white hidden"></dialog></div><figcaption class="relative text-[0.875rem]/[1.25rem] figure-caption mt-1 line-clamp-2 pr-2.5"><div>The pool can be a helpful place for astronauts to find their footing. . | Credit: NASA</div></figcaption></figure><p class="col-body mb-4 leading-7 text-[18px] md:leading-8 break-words min-w-0 charcoal-color">When NASA astronauts train for moonwalks, they don't start on the lunar surface — they often begin underwater. For decades, NASA's <a href="https://www.space.com/10659-spacewalks-physical-challenges.html" rel="nofollow noopener" target="_blank" data-ylk="slk:Neutral Buoyancy Laboratory;elm:context_link;itc:0;sec:content-canvas" class="link "><u>Neutral Buoyancy Laboratory</u></a> (NBL) has been the premier training ground for astronauts learning how to move, work, and problem-solve in the closest Earth-based simulation of <a href="https://www.yahoo.com/news/eyes-scientists-focus-microgravity-changes-100005530.html" data-ylk="slk:microgravity.;elm:context_link;itc:0;sec:content-canvas;outcm:mb_qualified_link;_E:mb_qualified_link;ct:story;" class="link  yahoo-link"><u>microgravity.</u></a> It’s inside this massive 6.2-million-gallon pool that crews rehearse everything from <a href="https://www.yahoo.com/news/articles/international-space-station-fall-earth-150000324.html" data-ylk="slk:International Space Station;elm:context_link;itc:0;sec:content-canvas;outcm:mb_qualified_link;_E:mb_qualified_link;ct:story;" class="link  yahoo-link"><u>International Space Station</u></a> repairs to complex lunar surface tasks.</p><p class="col-body mb-4 leading-7 text-[18px] md:leading-8 break-words min-w-0 charcoal-color">Now with the upcoming <a href="https://www.space.com/artemis-program.html" rel="nofollow noopener" target="_blank" data-ylk="slk:Artemis missions;elm:context_link;itc:0;sec:content-canvas" class="link "><u>Artemis missions </u></a>to the moon, astronauts are training in a new type of suit: the Axiom Extravehicular Mobility Unit, or <a href="https://images.nasa.gov/details/jsc2025e077725" rel="nofollow noopener" target="_blank" data-ylk="slk:AxEMU;elm:context_link;itc:0;sec:content-canvas" class="link "><u>AxEMU</u></a>, designed by <a href="https://www.space.com/axiom-space" rel="nofollow noopener" target="_blank" data-ylk="slk:Axiom Space;elm:context_link;itc:0;sec:content-canvas" class="link "><u>Axiom Space</u></a> to support the first human moonwalks in more than 50 years.</p><h2 class="heading-mb col-body heading-text-style font-bold charcoal-color">What is it?</h2><p class="col-body mb-4 leading-7 text-[18px] md:leading-8 break-words min-w-0 charcoal-color">The AxEMU represents an upgrade from the <a href="https://www.space.com/apollo-program-overview.html" rel="nofollow noopener" target="_blank" data-ylk="slk:Apollo;elm:context_link;itc:0;sec:content-canvas" class="link "><u>Apollo</u></a>-era suits and even the current ISS units. It’s built to offer <a href="https://www.axiomspace.com/axiom-suit" rel="nofollow noopener" target="_blank" data-ylk="slk:greater mobility;elm:context_link;itc:0;sec:content-canvas" class="link "><u>greater mobility</u></a>, improved fit across a wider range of body sizes, upgraded life-support systems, and better tools for scientific operations on the lunar surface.</p><p class="col-body mb-4 leading-7 text-[18px] md:leading-8 break-words min-w-0 charcoal-color">Because Artemis astronauts will need to traverse uneven terrain, collect rock samples, and work for extended periods in harsh lighting and temperature extremes, training with the AxEMU long before launch is essential. At the NBL, astronauts wear weighted mockups of the suit underwater, allowing engineers and astronauts to evaluate maneuverability, dexterity, visibility, and overall performance.</p><h2 class="heading-mb col-body heading-text-style font-bold charcoal-color">Where is it?</h2><p class="col-body mb-4 leading-7 text-[18px] md:leading-8 break-words min-w-0 charcoal-color">This image was taken at the NBL at NASA's <a href="https://www.space.com/17216-nasa-johnson-space-center.html" rel="nofollow noopener" target="_blank" data-ylk="slk:Johnson Space Center;elm:context_link;itc:0;sec:content-canvas" class="link "><u>Johnson Space Center</u></a> in Houston.</p><figure class="relative col-body mb-4"><div class="relative"><img alt="A person wearing a white spacesuit with a clear helmet kneels down to pick up a rock at the bottom of a large sandy pool with two people wearing dark swimsuits on either side of them" loading="lazy" width="960" height="540" decoding="async" data-nimg="1" class="fig-image-round" style="color:transparent" src="https://s.yimg.com/ny/api/res/1.2/h4KV6hAl7SuTB_B6NleOUA--/YXBwaWQ9aGlnaGxhbmRlcjt3PTk2MDtoPTU0MA--/https://media.zenfs.com/en/space_311/bfc07e97c447374a13320e0d1f0944ed"><button aria-label="View larger image" class="group absolute bottom-3 right-3 size-10 md:size-[50px] lg:inset-0 lg:size-full lg:bg-transparent" data-ylk="elm:expand;itc:1;sec:image-lightbox;slk:lightbox-open;"><span class="absolute bottom-0 right-0 rounded-full bg-white p-3 opacity-100 shadow-elevation-3 transition-opacity duration-300 group-hover:block group-hover:opacity-100 md:p-[17px] lg:bottom-6 lg:right-6 lg:bg-white/90 lg:p-5 lg:opacity-0 lg:shadow-none"><svg viewbox="0 0 22 22" aria-hidden="true" class="size-4 lg:size-6" width="22" height="22"><path d="M12.372.92c0-.506.41-.916.915-.916L21 0l-.004 7.712a.917.917 0 0 1-1.832 0V3.183l-6.827 6.828-1.349-1.348 6.828-6.828h-4.529a.915.915 0 0 1-.915-.915M1.835 17.816l6.828-6.828 1.349 1.349-6.829 6.827h4.529a.915.915 0 0 1 0 1.831L0 21l.004-7.713a.916.916 0 0 1 1.831 0z"></path></svg></span></button><dialog aria-label="Modal Dialog" aria-modal="true" class="fixed inset-0 z-[4] size-full max-h-none max-w-none bg-white hidden"></dialog></div><figcaption class="relative text-[0.875rem]/[1.25rem] figure-caption mt-1 line-clamp-2 pr-2.5"><div>NASA astronaut Loral O’Hara crouches to pick up a rock wearing the new AxEMU moonsuit. | Credit: NASA</div></figcaption></figure><h2 class="heading-mb col-body heading-text-style font-bold charcoal-color">Why is it amazing?</h2><p class="col-body mb-4 leading-7 text-[18px] md:leading-8 break-words min-w-0 charcoal-color">In September 2025, NASA completed the first dual-suit run with the AxEMU. During the test, NASA astronauts Loral O'Hara and Stan Love donned two fully integrated AxEMU units simultaneously, the first time the suits had been used together in a realistic operational scenario. The dual run allowed teams to assess how astronauts coordinate tasks while suited, how the life-support systems perform in tandem, and how the NBL environment supports full-scale Artemis training.</p><p class="col-body mb-4 leading-7 text-[18px] md:leading-8 break-words min-w-0 charcoal-color">O'Hara and Love carried out simulated lunar activities, including collecting rocks, navigating obstacles, and working side by side as they would on <a href="https://www.space.com/55-earths-moon-formation-composition-and-orbit.html" rel="nofollow noopener" target="_blank" data-ylk="slk:the moon;elm:context_link;itc:0;sec:content-canvas" class="link "><u>the moon</u></a>. The test also demonstrated that the facility, support systems, and training procedures are ready for the next phase of Artemis preparation.</p><h2 class="heading-mb col-body heading-text-style font-bold charcoal-color">Want to learn more?</h2><p class="col-body mb-4 leading-7 text-[18px] md:leading-8 break-words min-w-0 charcoal-color">You can learn more about NASA's <a href="https://www.space.com/artemis-program.html" rel="nofollow noopener" target="_blank" data-ylk="slk:Artemis program;elm:context_link;itc:0;sec:content-canvas" class="link "><u>Artemis program</u></a> and other <a href="https://www.space.com/all-moon-missions" rel="nofollow noopener" target="_blank" data-ylk="slk:moon missions.;elm:context_link;itc:0;sec:content-canvas" class="link "><u>moon missions.</u></a></p></div>

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