In Project Hail Mary (2026), Rocky gives Grace a thumbs-down in this scene after their ships have already detached. Because sound cannot travel through space but light can, Rocky can no longer “see” the ship with his echolocation but knows Grace can see him, making the gesture an act of faith.

In Project Hail Mary (2026), Rocky gives Grace a thumbs-down in this scene after their ships have already detached. Because sound cannot travel through space but light can, Rocky can no longer “see” the ship with his echolocation but knows Grace can see him, making the gesture an act of faith.

by SayFuzzyPickles42