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Interstellar Boundary Explorer

(satellite observing the ISM/heliosphere boundary)

The Interstellar Boundary Explorer (IBEX) is a NASA (Small Explorer Program, SMEX) space mission dedicated to mapping the boundary between the solar system and interstellar space. It was launched in 2008 with the goal of a 2-year mission but remains active in 2018. Its function is to detect energetic neutral atoms. Instruments:

Which detect higher and lower energy ENAs.


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