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Sciences and Exploration Directorate
In Development

Compton Spectrometer and Imager (COSI)

COSI would scan our Milky Way galaxy, measuring gamma rays from radioactive elements produced during stellar explosions to map the recent history of star death and element production. It would also measure polarization, to improve our understanding of how distant energetic cosmic explosions produce gamma rays.

Launch Date

November 2027

Class

Flight Project

Website

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Key Staffs

COSI would scan our Milky Way galaxy, measuring gamma rays from radioactive elements produced during stellar explosions to map the recent history of star death and element production. It would also measure polarization, to improve our understanding of how distant energetic cosmic explosions produce gamma rays.

Related Publications

2023. "The Compton Spectrometer and Imager.", arXiv e-prints, arXiv:2308.12362 [10.48550/arXiv.2308.12362] [Journal Article/Letter]