Historical clue formulations

• About 3.26 light years — 2024-08-18
• About 3 1/4 light-years — 2016-06-18
• Distance light travels in 3.26 years — 2015-10-10
• 3.26 light-years — 2011-04-24
• Unit that's larger than 19 trillion miles — 2008-06-28
• 3.26 light-years — 2006-05-28
• 3.26 light-years — 2005-05-11
• Astronomical distance — 2005-04-06
• Astronomical distance — 2000-12-20
• 3.26 light-years — 1999-02-28
• Intergalactic distance — 1996-05-19