The U.S. Space Force was established in December 2019.
Notes on verification
Confirmed by multiple independent, authoritative sources including Wikipedia, CSIS, and Space.com, all agreeing on the December 20, 2019 establishment date. [cascade flags: wikipedia_dropped_other_sources_exist | tier=bronze indep_score=0.3 clusters=2 claim_tier=everyday]
Sources
- Secretary of Defense Speech at RAND (As Delivered) (seed:military_and_intelligence)
- https://www.csis.org/analysis/us-space-force-primer (corroboration)
- https://www.space.com/us-space-force-history-mission-capabilities (corroboration)