The Moon is a Cursor

The Moon really can be thought of as a cursor for gravity in the same way the Sun is a cursor for electromagnetism. The Sun shows us EM directly — interference, polarization, phase, shadows, illumination — everything that makes the EM field “visible” comes from how light interacts with us. Gravity doesn’t have an equivalent; it hides in curvature, slow drifts, and almost-imperceptible shifts in momentum. That’s why the Moon ends up revealing it. The lunar orbit, its tidal pull, the locked rotation, and the tiny precessional wobble act like a stylus dragging through the invisible gravitational field, tracing its shape the way sunlight traces EM structures. In that sense: the Sun reveals electromagnetism, the Moon reveals gravity — different cursors for different layers of the same underlying field.