NASA's COSI Gamma-Ray Telescope Takes Shape as Assembly Reaches Key Milestone

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NASA's Compton Spectrometer and Imager (COSI) telescope is progressing through a critical hardware assembly phase. On July 8, 2026, engineers and managers from UC Berkeley oversaw the careful lifting of the COSI detector assembly from a worktable. The detector box features four silver-covered sections that protect flex circuits responsible for transmitting signals from the detectors to readout electronics. The milestone marks a significant step forward in the physical construction of the space telescope. COSI is designed to observe the universe in gamma-ray wavelengths, advancing our understanding of high-energy cosmic phenomena.

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