A small moon barely wider than Great Britain has revealed something profound about the hidden architecture of planetary systems: Enceladus, orbiting Saturn, generates electromagnetic ripples that extend more than half a million kilometres into the surrounding magnetosphere — a reach one thousand times its own diameter. Discovered through analysis of magnetospheric data in 2026, this Alfvén-wave wake stretches farther than the Moon lies from Earth, quietly rewriting assumptions about how modest celestial bodies shape the vast magnetic environments they inhabit. In the language of the cosmos, ev