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Sciences and Exploration Directorate
In Development

Modular Spectrometer for Atmosphere and Ionosphere Characterization (MoSAIC)

MoSAIC will measure thermospheric winds and the composition of the thermosphere-ionosphere by observing the charged and non-charged particles within near-Earth space. The MoSAIC instrument is a quadrupole mass spectrometer, which filters these particles according to mass for detailed analysis.

Launch Date

2029

Class

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Website

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Key Staff

GDC is a coordinated group of satellites that will provide the first direct global measurements of the dynamic and complex region of space enveloping Earth – known as the ionosphere and thermosphere (I-T) region. MoSAIC will measure thermospheric winds and the composition of the thermosphere-ionosphere by observing the charged and non-charged particles within near-Earth space. The MoSAIC instrument is a quadrupole mass spectrometer, which filters these particles according to mass for detailed analysis. MoSAIC enables comprehensive, concurrent, multi-point characterization of the density, composition, temperature, and wind/drift velocity of neutrals and ions in the Earth’s Ionosphere-Thermosphere system necessary to fully address Geospace Dynamics Constellation (GDC) core goals. MoSAIC’s landmark measurements are implemented using a uniquely low-risk instrument that leverages GSFC’s high-heritage technology and extensive scientific, technical, and operations expertise.