- ❪✺❫ Cosmological Concepts ○
- ❪✺❫ High-Energy Astrophysics Concepts ○
- ❪✺₁❫ Astronomical Classes ○
- ❪✺₂❫ Astronomical Domains ○
- ❪✺₃❫ Astronomical Particulars ○
- ❪✺₄❫ Astronomical Sets ○
- ❪✺_❫ Astronomical Subs ○
- Accretion ○͒
- Azimuth ○
- Celestial Sphere ○
- Color Index ○
- Gravitational Collapse ○
- Interstellar Medium ○
- Observation ID (ObsID) ○
- Outer Space ○
- Quiescence ○
- Roche Lobe ○
- Roche Sphere ○
- Telluric Contamination ○