Space Abbreviations and Acronyms
- JEM-ELM-ESJapan Experiment Module - Experimental Logistics Module Exposed Section
- JEM-ELM-PSJapan Experiment Module - Experimental Logistics Module Pressurised Section
- JEM-PMJapanese Experiment Module, Pressurized Module
- JEM-PMJapan Experiment Module - Pressurised Module
- JEMRMSJapanese Experiment Module Remote Manipulator System
- JENAMJoint European and National Astronomy Meeting
- JERSJapanese Earthtresources Satellite
- JERSJapanese Earth Resources Satellite (JPOP)
- JETSJoint Electronics Tyhe System
- JEZJoint Engagement Zone
- JFCCJoint Functional Component Command
- JFCCSJoint Functional Component Commands
- JHAJournal for The History of Astronomy
- JHASJournal for The History of Astronomy Supplement
- JHU-APLJohns Hopkins Universivy-Applied Physics Laboratory
- JILAJoint Institute for Laboratory Astrophysics
- JIMJaarbeurs Innovation Mile
- JIMOJupiter Icy Moons Orbiter
- JIMOJupiter Icy Moon Orbiter
- JIMOJupiter Icy Moons Orbitor
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