Historical clue formulations

• Prefix meaning "heavens," as the name of a planet suggests — 2026-01-22
• Heavenly: Prefix — 2022-03-16
• Prefix meaning "heavens" — 2015-02-27
• Heavens: Prefix — 2012-10-30
• Heavenly: Prefix — 2011-12-04
• Heavens: Prefix — 2010-04-17
• Heavens: Prefix — 2009-07-25
• Heavens: Prefix — 2007-08-07
• Heavens: Prefix — 2007-02-09
• Heavens: Prefix — 2006-04-09
• Heavens: Prefix — 2002-02-10
• Heavens: Prefix — 2000-07-09
• Heavens: Prefix — 1997-01-07
• Heavens: Prefix — 1993-11-28