Technology Readiness Level (TRL)
Standard 1-9 NASA/DoD maturity scale used to assess how ready a technology is for operational use, from basic principles observed (TRL 1) to flight-proven (TRL 9).
In this vault
The hwo-technology-maturation-project-office’s Technology Development Plan (src-hwo-technology-development-plan-2026-07) targets TRL 5 for critical habitable-worlds-observatory technologies (coronagraph, ultra-stable telescope, UV/visible instrumentation) before the mission’s Mission Concept Review.