Which force is much weaker than electromagnetism but still dominates the universe on large scales?

On the scale of individual particles, gravity is extraordinarily weak compared with electromagnetism. Yet because gravity only attracts and cannot be canceled the way electric charges can, its effects accumulate across immense amounts of matter. That is why gravity shapes planets, stars, galaxies, and clusters of galaxies. Electromagnetism usually dominates chemistry and everyday forces, but it tends to cancel out over large objects because positive and negative charges balance. Gravity’s universal pull makes it the architect of cosmic structure.