Acronyms, initialisms, abbreviations, contractions, and other phrases which expand to something larger, that I've seen in this thread:

|Fewer Letters|More Letters| |-------|---------|---| |Isp|Specific impulse (as explained by Scott Manley on YouTube)| | |Internet Service Provider| |JPL|Jet Propulsion Lab, California| |LEO|Low Earth Orbit (180-2000km)| | |Law Enforcement Officer (most often mentioned during transport operations)| |NEO|Near-Earth Object|

^(4 acronyms in this thread; )^(the most compressed thread commented on today)^( has 14 acronyms.)
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