Historical clue formulations

• Old rocket stage — 2019-10-15
• It was boosted by Atlas — 2018-02-16
• It was boosted by Titan — 2015-05-09
• NASA's Gemini rocket — 2013-12-06
• Titan booster — 2013-01-31
• NASA booster — 2005-04-16
• Booster — 2002-05-03
• Rocket stage — 2000-11-09
• Gemini program rocket — 2000-01-28
• Rocket type — 1999-06-07
• Rocket stage — 1998-12-21
• NASA satellite launcher — 1998-01-13
• 60's rocket stage — 1997-09-22
• Rocket stage — 1996-11-25
• Rocket stage — 1996-03-11
• Rocket stage — 1995-12-10
• Gemini rocket stage — 1995-09-04
• Rocket stage — 1994-10-27
• Rocket stage — 1994-10-14
• Satellite launcher — 1994-05-29
• Rocket stage — 1993-12-11