Most astronomy books can be found in the Qs (Science), which are located in the southwest corner of the 3rd floor.
- QB — Astronomy
- 15-36 — History
- 140-237 — Practical & Spherical Astronomy
- 275-343 — Geodesy
- 349-421 — Theoretical Astronomy & Celestial Mechanics
- 455-466 — Astrogeology & Astrophysics
- 495-991 — Descriptive Astronomy, Cosmogony, Cosmology
