Electrojet Zeeman Imaging Explorer

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Electrojet Zeeman Imaging Explorer
Spacecraft properties
Artist's concept of the EZIE satellites
Names	EZIE

Mission type	Magnetospheric research
Operator	NASA
Website	https://ezie.jhuapl.edu
Mission duration	18 months (planned)


Manufacturer	Blue Canyon Technologies


Start of mission
Launch date	14 March 2025
Rocket	Falcon 9 Block 5
Contractor	SpaceX


Orbital parameters
Reference system	Geocentric orbit
Regime	Sun-synchronous, low Earth orbit

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 near a magnetic field.^[1] EZIE was launched on 14 March 2025 on SpaceX Transporter-13 Mission as a rideshare payload.^[2]

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.^[3]

References

^ "NASA's EZIE Mission Passes Key Milestone – EZIE". blogs.nasa.gov. 11 July 2022. Retrieved 22 October 2024. This article incorporates text from this source, which is in the public domain.
^ "NASA's EZIE Launches on Mission to Study Earth's Electrojets - NASA Science". March 15, 2025.
^ "NASA's EZIE Mission Captures 'First Light' - NASA Science". April 22, 2025.

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v t e Solar space missions
List of heliophysics missions - List of solar telescopes
Current	ACE (since 1997) Aditya-L1 (since 2023) ASO-S (since 2022) CHASE (Xihe) (since 2021) DSCOVR (since 2015) Hinode (Solar-B) (since 2006) IRIS (since 2013) Parker Solar Probe (since 2018) Solar and Heliospheric Observatory (since 1995) Solar Dynamics Observatory (since 2010) Solar Orbiter (since 2020) STEREO (since 2006) Wind (since 1994) PROBA-3 (since 2024)
Past	Apollo Telescope Mount CORONAS-I CORONAS-F CORONAS-Photon EURECA ESRO 2B Genesis GOES 13 Helios Hinotori (Astro-A) IMP-8 ISEE-1 ISEE-2 ICE / ISEE-3 MinXSS1 MinXSS2 Orbiting Solar Observatory OSO 1 OSO 2/OSO B OSO 3 OSO 4 OSO 5 OSO 6 OSO 7 OSO 8 Solwind PICARD Pioneer 5 Pioneer 6, 7, 8 and 9 PROBA-2 Prognoz programme RHESSI SOLAR SolarMax Spartan 201 Taiyo (SRATS) TRACE Ulysses Yohkoh (Solar-A)
Planned	Electrojet Zeeman Imaging Explorer (2025) PUNCH (2025) SWFO-L1 (2025) TRACERS (2025) SOLAR-C (2028) HelioSwarm (2028) Solar Polar Orbit Observatory (2029) Vigil (2031)
Proposed	ADAHELI SETH Sundiver GSST
Cancelled	AOSO Pioneer H OSO J OSO K Solar Cruiser Solar Sentinels
Lost	Pioneer E OSO C
Sun-Earth	SORCE SXI ACRIMSAT
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