Maintainers for marble-data are Debian Qt/KDE Maintainers <debian-qt-kde@lists.debian.org>.
You may want to refer to the following packages that are part of the same source: libastro-dev, libastro1, libmarble-dev, libmarblewidget-qt5-28, marble, marble-maps, marble-plugins, marble-qt, marble-qt-data, plasma-marble.
You might like to refer to the marble-data package page, to the Package Tracking System, or to the source package src:marble's bug page.
If you find a bug not listed here, please report it.