Tidal downsizing and evaporation of planetary bodies. The maximum size of a planetary body surviving tidal forces is denoted by the gradient-filled regions; the color denotes the cohesive strength. The blue curve traces the maximum size of survivable small bodies under the tidal effect. Rubble piles (> 100 m) are typically assumed to have a cohesion of 1 Pa, whereas monolithic bodies (< 100 m) exhibit much higher cohesion, often exceeding 10⁴ Pa. The vertical gray line marks the classical Roche limit. The red line represents the minimum size of survivable small bodies under evaporation via gas drag during a single flyby. The shaded region represents the parameter space where small bodies can persist against both tidal disruption and hydrodynamic ablation.