The resulting comparisons contributed to NASA’s understanding of how prolonged spaceflight may affect the human body—knowledge considered essential for future expeditions to the Moon and Mars

Training copies like this example were used extensively in mission simulations

it docked with the International Space Station on April 3

Alexander Gerst was flying his first mission and later became Germany’s first ISS commander

Astrophilatelic and Historical Significance

NASA JSC Zero-G patch – ex Hans Schlegel Mercury The resulting comparisons contributed toOffered from the personal collection of German Space Shuttle astronaut Hans Schlegel, veteran of STS 55 and STS 122 and backup crew member for Mir 97. NASA JSC Zero G silk patch ca. 4'' . Hand signed by Schlegel on the backside. The patch is accompanied by our Certificate of Authenticity confirming that it originates from Hans Schlegels personal collection. A rare and highly collectible piece of spaceflight history with exceptional astronaut