MarsSeed [1] filed a deletion request for stellarium-bzr [2]: Obsolete Bazaar-based VCS package abandoned in 2015. Not needed anymore; project source code has been migrated to Git/GitHub.
Arch carries the latest stable versio (updated 2021-12-25): https://archlinux.org/packages/extra/x86_64/stellarium/ [1] https://aur.archlinux.org/account/MarsSeed/ [2] https://aur.archlinux.org/pkgbase/stellarium-bzr/
