The planets range from tiny to enormous, and a handful of fruit makes that range visible. A blueberry stands in for Mercury, a cherry for Mars, and a watermelon for Jupiter. Once you match each planet to a fruit by size, you space them apart to show how far each one sits from the Sun. The distances are huge, even in a scaled-down model.

Scale models work by picking a small object to match each big one. You pick a fruit for each planet based on size. The distances are huge, even in a scaled-down model.