The Magnetospheric Multiscale Mission is a NASA robotic space mission to study the Earth's magnetosphere, using four identical spacecraft flying in a tetrahedral formation. The spacecraft were launched on 13 March 2015 at 02:44 UTC. From Wikipedia
A year after the strongest geomagnetic storm in two decades, NASA integrates unprecedented findings into improved forecasting and resilience strategies ahead of Solar Cycle 25's peak.
