Stars Without Steps: Bridging Observatory Access Based on Physical Proximity Through Educational XR. - Clara Sayffaerth; Jennifer Meiler; Crystal McArdle-Ventura; Atakan Çoban; Christoph Hoyer; Florian Müller 003; Arno Riffeser; Jochen Kuhn; Albrecht Schmidt 001 (CHI Extended Abstracts, 2026)