Electrojet Zeeman Imaging Explorer

{{Infobox spaceflight

| name = Electrojet Zeeman Imaging Explorer

| names_list = EZIE

| image = Electrojet Zeeman Imaging Explorer (EZIE) Mission (SVS14542 - New EZIE STILL 3SATs).jpg

| image_caption = Artist's concept of the EZIE satellites

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| mission_type = Magnetospheric research

| operator = NASA

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| website = https://ezie.jhuapl.edu

| mission_duration = 18 months (planned)

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| manufacturer = Blue Canyon Technologies

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| launch_date = 14 March 2025

| launch_rocket = Falcon 9 Block 5

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| launch_contractor = SpaceX

| orbit_reference = Geocentric orbit

| orbit_regime = Sun-synchronous, low Earth orbit

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| apsis = gee

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}}

Electrojet Zeeman Imaging Explorer (EZIE) is a NASA heliophysics mission that studies the Sun and space weather near Earth. It consists of three CubeSats that observe the auroral electrojets, by exploring a phenomenon called Zeeman splitting – the splitting of a molecule’s light spectrum in a magnetic field.{{cite web |title=NASA's EZIE Mission Passes Key Milestone – EZIE |url=https://blogs.nasa.gov/ezie/2022/07/11/nasas-ezie-mission-passes-key-milestone/ |website=blogs.nasa.gov |access-date=22 October 2024 |date=11 July 2022}} {{PD-notice}} EZIE was launched on 14 March 2025 on SpaceX Transporter-13 Mission as a rideshare payload.{{Cite web|url=https://science.nasa.gov/science-research/heliophysics/nasas-ezie-launches-on-mission-to-study-earths-electrojets/|title=NASA’s EZIE Launches on Mission to Study Earth’s Electrojets - NASA Science|date=March 15, 2025}}

EZIE satellites captured "first light" on March 19; one of the three satellites successfully recorded Zeeman splitting of the 118 GHz oxygen emission line for the first time with its Microwave Electrojet Magnetogram (MEM) instrument.{{Cite web|url=https://science.nasa.gov/blogs/ezie/2025/04/22/nasas-ezie-mission-captures-first-light/|title=NASA’s EZIE Mission Captures ‘First Light’ - NASA Science|date=April 22, 2025}}

File:Electrojet Zeeman Imaging Explorer (EZIE) Mission (SVS14542 - Ezie STILL A).jpg

Electrojet Zeeman Imaging Explorer (EZIE) Mission (SVS14542 - THREE EZIE Orbit 40sec 20201102-).webm