Budding, Edwin2025-01-272025-01-272015978-1-58381-877-0978-1-58381-876-3https://hdl.handle.net/20.500.12428/21837Conference on Living Together: Planets, Host Stars and Binaries -- SEP 08-12, 2014 -- Litomysl, CZECH REPUBLICThough the title points to a wider program than can be accommodated in one individual paper, the meeting was called with such considerations as a background. This paper then raises primarily questions that people might ask in connection with Zdenek Kopal and his work, rather than giving comprehensive answers. A few general thinking points are presented first, followed by a selection of particular illustrations arranged by the several decades over which Kopal was active in astronomical science. A concluding section returns to some general and personal reflections.eninfo:eu-repo/semantics/closedAccessClose Binary-SystemsLight-CurvesEclipsing VariablesFourier-AnalysisRoyal RoadStarsConference Object496318N/AWOS:000369467900002