During the Apollo 17 mission, geologist Harrison "Jack" Schmitt lost his footing on a lunar slope and performed a slow-motion tumble into the regolith due to the Moon's one-sixth gravity. Despite the comical appearance of his "bunny hop" failure, the incident highlighted the unique physical challenges astronauts faced while navigating the slippery, dusty lunar terrain in bulky pressurized suits. Credit: NASA | History In Pictures

Pilots train for the intense demands of high-speed flight by undergoing 9G force testing—a crucial step in preparing for the extreme physical strain of jet maneuvers. During sharp turns, the body can experience up to nine times the force of gravity, pulling blood from the brain and risking vision blackout or even G-LOC (G-force-induced loss of consciousness). To combat this, pilots master Anti-G Straining Maneuvers (AGSM) to keep blood flowing and stay conscious. This training, typically done in

In 1951, Fred Astaire’s famous “ceiling dance” was filmed for Royal Wedding. The scene appears gravity-defying because the entire room set was built inside a large, rotating “anti-gravity” rig. As the set rotated, Astaire danced, making it seem like he was walking on the walls and ceiling. This innovative technique created the illusion of a gravity-defying dance. | History In Pictures