Cere - circ
- Cerenkov counters
- Cerenkov effect
- Cerenkov radiation
- cesium clocks
- CH
- CH stars
- Chandler wobble
- Chandrasekhar limit
- Chandrasekhar-Schonberg limit
- charge coupled devices
- charge injection devices
- charge transfer devices
- charged particles
- charts
- chemical abundance
- chemical composition
- chemical elements
- chemical evolution
- chemiluminescence
