TRACERS

TRACERS (Tandem Reconnection and Cusp Electrodynamics Reconnaissance Satellites) is a NASA Small Explorers mission designed to study magnetic reconnection at Earth's polar cusps - the funnel-shaped regions where solar wind plasma has direct access to the inner magnetosphere. TRACERS-A and TRACERS-B fly in a tandem sun-synchronous orbit, separated by 10 to 120 seconds along-track to distinguish spatial from temporal variations in cusp reconnection activity.

The ELaNa-64 cubesat REAL (Relativistic Electron Atmospheric Loss), built by Johns Hopkins APL for Dartmouth College, measured energetic electrons precipitating from the Van Allen radiation belts into the atmosphere.