This artist rendering shows how Kelvin-Helmholtz instability waves in Earth's magnetic tail might propagate through time and space. Credit: Quanqi Shi

Simultaneous satellite observations from different distances of Earth's magnetic tail offer insight into how these instability waves evolve through time and space.

Ling, Y., Shi, Q., Shen, X.‐C., Tian, A., Li, W., Tang, B., et al.(2018).
Observations of Kelvin‐Helmholtz waves in the Earth's magnetotail near the lunar orbit. /Journal of Geophysical Research: Space Physics/, 123, 3836-3847.