↩ 🔵 🔵 🔵 ❪✺₁.❫⁺ Classes of Astronomical Objects ○ ❪✺₁❫ High-Energy Astrophysics Classes ○ ❪✺₁❫ Relativistic Classes ○ Compact Object ○꠹ ❪✺ᵢ❫ Black Hole Concepts ○ ❪✺₁𝑖❫ Classes of Black Holes ○️