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COBE

COBE was NASA's space-astronomy mission to map the cosmic microwave background and diffuse infrared background, providing foundational measurements for precision cosmology before operations ended in December 1993.

COBE
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Identity

Aliases
Cosmic Background Explorer missionExplorer 66
Name
COBE
Status
completed

Details

Astronauts
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Description
COBE was NASA's space-astronomy mission to map the cosmic microwave background and diffuse infrared background, providing foundational measurements for precision cosmology before operations ended in December 1993.
Destination
Sun-synchronous polar Earth orbit at approximately 900 km altitude (99° inclination; 103-minute period)
End Date
1993-12-23
Launch Site
Outcome
COBE completed its all-sky microwave and infrared surveys and delivered measurements that established the blackbody spectrum and anisotropy of the cosmic microwave background.
Programs
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Start Date
1989-11-18
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Creation Time
August 1, 2026 at 09:08:06 UTC
Updated Time
August 23, 2026 at 01:24:55 UTC

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