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Compton Spectrometer and Imager Space Observatory

NASA’s Compton Spectrometer and Imager (COSI) is a Small Explorer gamma-ray space observatory in implementation for a targeted 2027 launch. Its wide-field telescope will map soft gamma rays, studying antimatter, nucleosynthesis, gamma-ray polarization, and multi-messenger astrophysical sources across the Milky Way and beyond.

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Identity

Family Name
COSI
Full Name
Compton Spectrometer and Imager Space Observatory
Roles
observatoryresearch
Status
development
Type
spacecraft

Details

Description
NASA’s Compton Spectrometer and Imager (COSI) is a Small Explorer gamma-ray space observatory in implementation for a targeted 2027 launch. Its wide-field telescope will map soft gamma rays, studying antimatter, nucleosynthesis, gamma-ray polarization, and multi-messenger astrophysical sources across the Milky Way and beyond.

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Creation Time
August 13, 2026 at 02:51:57 UTC
Updated Time
August 13, 2026 at 02:51:57 UTC