General-relativity evidence and applications

What this note covers

1. Gravity as spacetime geometry
2. Clock rates and satellite navigation
3. Gravitational lensing bends the observed light path
4. Black holes and what observations actually show
5. Gravitational waves open a different observational channel
6. Evaluate converging evidence rather than one dramatic claim

6 sections · 10 key terms & formulas · 6 common mistakes