/index/2010-01-01-article-3439-ufo-vs-uap-vs-drone-a-plain-english-guide-to-labels-definitions-and-why-they-keep-changingCIVILIAN
UFO vs UAP vs ‘Drone’: A Plain-English Guide to Labels, Definitions, and Why They Keep Changing
Learn the difference between UFO vs UAP vs drone, why the labels change, and how to assess sightings, evidence, and certainty.
[ PRIMARY CITATION // NASA RECORD · CTD-0720 ]
WITNESSES & UNITS
On-record civilian observersSENSORS & EVIDENCE
Reference