Adding launch NET August 2027
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COSI (Compton Spectrometer and Imager)
Falcon 9 Block 5
Latest published target
August 2027 · date to be confirmed. The day and time remain unconfirmed.
Source record updated . This is a source update, not a confirmed launch time.
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What changed?
Checks for schedule changes while this page is visible.
Target time, not a confirmed liftoff.
Mission
Wide-field gamma-ray telescope designed to study energetic phenomena in the Milky Way and beyond, including the creation and destruction of matter and antimatter and the final stages of the lives of stars. The mission is a collaboration between the University of California, Berkeley’s Space Sciences Laboratory, the University of California, San Diego, the Naval Research Laboratory, NASA’s Goddard Space Flight Center, and Northrop Grumman.
- Launch vehicle
- Falcon 9 Block 5
- Mission type
- Astrophysics
- Destination orbit
- Low Earth Orbit
- Launch pad
- Space Launch Complex 40
- Provider
- SpaceX
The vehicle
Published configuration and flight history.

Falcon 9 Block 5
Falcon 9 is a two-stage rocket designed and manufactured by SpaceX for the reliable and safe transport of satellites and the Dragon spacecraft into orbit. The Block 5 variant is the fifth major interval aimed at improving upon the ability for rapid reusability.
- Height
- 70 m
- Diameter
- 3.65 m
- Stages
- 2
- Recorded launches
- 537
- First flight
- 2018-05-11
Launch window
A calendar entry will be available when a date is confirmed.
A precise launch window has not been published.
Launch site & orbit
Cape Canaveral SFS, FL, USA
Launch site & orbit
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Coverage & sources
Links supplied by the mission data provider.
Coverage and times may change.
Mission coverage
No viewing link has been published yet.
Further reading
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