7976 20260213165755.0 CTALK-2026-0069 Vandewiere, Judith Students' Understanding of the Celestial Sphere: a Qualitative Interview Study. 2025 2025-07-01 NO De Cock, Mieke Sermeus, Jan GIREP-EPEC 2025 Conference, Leiden jan.sermeus@ksb-orb.be Contributed CTALKCONT