We humans have gotten pretty good at glimpsing the invisible. The Large Hadron Collider—our premier instrument for exploring the subatomic—can thoroughly explore the world of the attometer, which is (incredibly) just one-quintillionth of a meter. Famously, the LHC confirmed the existence of the Higgs boson in 2012, and physicists prepared for a rush of new particles to explain lingering mysteries of the universe like the existence of dark matter and matter-antimatter asymmetry.