Press Release
秘密直播 APL Space Weather Mission Selected by NASA
Artist鈥檚 conception of the 秘密直播 APL-led Electrojet Zeeman Imaging Explorer (EZIE) NASA mission. EZIE consists of three SmallSats 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鈥檚 magnetosphere, and which responds to solar activity and other drivers. This space weather mission is scheduled to launch in 2024.
Credit: NASA/秘密直播 APL
A 秘密直播 Applied Physics Laboratory-led mission to explore electric currents in Earth鈥檚 atmosphere that link the aurora to our planet鈥檚 magnetosphere has been selected by NASA to move forward to a scheduled launch in 2024.
The Electrojet Zeeman Imaging Explorer (EZIE) is a set of three SmallSats 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鈥檚 magnetosphere, and which responds to solar activity and other drivers.
The interaction of the magnetosphere and the solar wind 鈥 one piece of Earth鈥檚 complicated space weather system 鈥 compresses the Sun-facing side of the magnetosphere and drags out the nighttime side of the magnetosphere into what is called a 鈥渕agnetotail.鈥 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鈥檚 surface, and damage to spacecraft in orbit.
EZIE will launch no earlier than June 2024; the total mission budget is $53.3 million. The principal investigator for the mission is APL鈥檚 Jeng-Hwa (Sam) Yee.
Artist鈥檚 impression of an EZIE SmallSat.
Credit: NASA/秘密直播 APL/Steve Gribben
鈥淲ith these new missions, we鈥檙e expanding how we study the Sun, space and Earth as an interconnected system,鈥 said Peg Luce, deputy director of the Heliophysics Division at NASA Headquarters in Washington. 鈥淓ZIE鈥檚 use of instrument technology proven on Earth science CubeSat missions is just one example of how science and technology development at NASA go hand in hand across disciplines.鈥
鈥淒espite decades of research, we still don鈥檛 understand the basic configuration of the electrical currents which are central to the interactions between Earth and the surrounding space,鈥 said Yee, chief scientist in Earth Science at APL. 鈥淭his is a problem of universal importance since it applies to any magnetized body such as Mercury, Saturn and Jupiter 鈥 but it also has practical importance since these currents have a profound impact on our technologies in space and here on Earth.鈥
鈥淲e鈥檙e excited about the selection of EZIE and the opportunity to deliver another high-impact space mission to NASA鈥檚 impressive heliophysics fleet,鈥 said APL Civil Space Mission Area Executive Jason Kalirai. 鈥淓ZIE is a small mission with a big science return. The study of space weather becomes even more critical with every advance that humanity makes into space, and we look forward to working on the spacecraft, systems and instruments with our mission partners.鈥
APL has designed, built and operated several heliophysics missions for NASA, including , and . APL is currently developing the mission, in partnership with Princeton University, scheduled for an early 2025 launch.
Funding for this heliophysics mission of opportunity comes from the Heliophysics Explorers Program, managed by the Explorers Program Office at NASA鈥檚 Goddard Space Flight Center in Greenbelt, Maryland.