Hands-on model of gravity, orbits, and spacetime curvature Bring the physics of space science down to Earth with this dramatic, hands-on Gravity Well—an Arbor Scientific exclusive. Using a flexible, 6 ft diameter, lycra “space-time” surface and rolling marbles, students can see how mass warps space and how that curvature guides motion, turning abstract gravity ideas into something they can observe and measure. As students roll marbles past a central heavy ball, they watch paths bend into orbits, speed up near “massive bodies,” and change as distance changes. The bigger the mass, the deeper and wider the “well,” making it a powerful model for understanding why planets orbit stars and what gravitational attraction really means. Why Teachers Love the Gravity Well Saves hours vs. DIY versions: Teachers often try to build a gravity well themselves, but getting the surface tension and frame right is tough. This is a sturdy, proven setup that works beautifully every time. Makes gravity visible and unforgettable: Students immediately grasp gravity as curvature/attraction instead of a purely mathematical idea. High-engagement whole-class demo or lab: Large (6 ft across), walk-around setup gets every student involved and sparks great discussion. Easy to store, quick to set up: Collapsible frame and fabric pack away neatly after use.
