China uses SpaceX's Starlink satellites to detect stealth aircraft
interestingengineering.com
Chinese researchers have found an innovative way to detect stealth aircraft passively using Starlink satellite constellations.

https://archive.is/2024.09.16-214410/https://interestingengineering.com/innovation/china-starlink-detect-stealth-fighters#selection-373.0-373.86