Historical clue formulations

• Lunar ___ — 2024-02-03
• Space station section — 2020-05-08
• The "M" of NASA's LEM — 2018-05-21
• Computer program subsection — 2010-09-25
• Interchangeable unit — 2006-08-24
• NASA component — 2005-03-05
• Lunar___ — 1996-02-11