"Luna programme" . "Luna programme" . . . "Lunar sample return" . . "Luna spacecraft" . "Luna 15-24" . "Luna missions" . "Lunar sample-return" . "Moon (Luna)" . . "Ye-8-5" . . "Soviet Luna" . . "Soviet Luna programme" . . "\\\"Luna\\\"" . . . "research by space equipment" . "Lunik" . . . "success rates" . "exploring the Moon" . "a program on automated spacecraft launches" . . "Luna programme#Mission Success Rates" . . "Luna programme#Mission success rates" . . "Lunas" . "Luna" . . "''Luna'' program" . "Luna landers" . "Luniks" . . "Luna program" .