92 – Astronomy, Mathematics and Relativity
92.03 Terrestrial globe
92.04 Earth-Moon scale model
92.06 Celestial globe
92.09 Lunar phases
92.10 Solar/lunar eclipse model
92.12 Milky Way galaxy model
92.15 Lénárt sphere
92.18 Dissectible cone
92.21 Gravitational lens
92.24 Temperature of a radiating body
92.27 Draw ellipses
92.30 Cutaway telescope
92.33 The upper atmosphere of Venus
92.36 South-pointing carriage (chariot)
92.39 Vortx® wishing well