๐ Special Points in Advanced SystemsBuilding Blocks/Celestial Bodies & Calculation Points/Special Points in Advanced Systems/INDEX.mdINDEX ยท Special Points in Advanced Systems ยท Housekeeping๐ Special Points in Advanced Systems Contents ๐ Notes Earth (Heliocentric) Galactic Center Great Attractor Lunar Apogee (Black Moon) Lunar Perigree README Shapley Attractor Sun-Moon Midpoint Super Galactic Center