high - Hubb
- high dispersion spectra
- high dispersion spectroscopy
- high energy astrophysics
- high energy processes
- high energy radiation
- high luminosity stars
- high resolution spectra
- high resolution spectrosopy
- high speed photometers
- high temperature
- high velocity clouds
- high velocity stars
- Hirayama families
- history of astronomy
- HJD
- Holmberg radius
- holmium stars
- Holtsmark approximation
- horizon
