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EZIE 1, 2, 3


EZIE (Electrojet Zeeman Imaging Explorer) is a Johns Hopkins Applied Physics Laboratory-led mission to explore electric currents in Earth’s atmosphere that link the aurora to our planet’s magnetosphere.

EZIE is a set of three 6U-CubeSats that will study the auroral electrojet, which are electrical currents flowing about 60 to 90 miles above the poles that link the beautiful aurora to the Earth’s magnetosphere, and which responds to solar activity and other drivers.

The interaction of the magnetosphere and the solar wind — one piece of Earth’s complicated space weather system — compresses the Sun-facing side of the magnetosphere and drags out the nighttime side of the magnetosphere into what is called a “magnetotail.” Auroral electrojets are generated by changes in the structure of the magnetotail. The same space weather phenomena that power the fascinating aurora can cause interference with radio and communication signals and utility grids on Earth’s surface, and damage to spacecraft in orbit.

EZIE was selected in DEcember 2020 as an Explorer mission of opportunity and will launch no earlier than June 2024. The total mission budget is $53.3 million.

Nation: USA
Type / Application: Research, magnetosphere
Operator: Johns Hopkins University Applied Physics Laboratory (JHU/APL)
Contractors: Johns Hopkins University Applied Physics Laboratory (JHU/APL)
Configuration: CubeSat (6U)
Propulsion: ?
Power: 2 deployable solar arrays, batteries
Satellite COSPAR Date LS Launch Vehicle Remarks
EZIE 1 - 2024 with ?, EZIE 1, 2
EZIE 2 - 2024 with ?, EZIE 1, 3
EZIE 3 - 2024 with ?, EZIE 1, 2