Historical clue formulations

• ___ Stone (relic inscribed in three languages) — 2025-09-15
• ___ Stone (British Museum attraction) — 2023-01-03
• ___ Stone (hieroglyphics key) — 2021-04-20
• ___ Stone (aid in deciphering Egyptian hieroglyphics) — 2020-06-08
• ___ Stone (key to deciphering Egyptian hieroglyphs) — 2015-03-30
• *First spacecraft to orbit a comet (2014) — 2015-02-08
• Stone discovery site — 2010-05-04
• ___ Stone (hieroglyphic key) — 2007-05-28
• ___ Stone — 2003-11-23
• ___ stone (hieroglyphics key) — 1999-11-29
• Stone name — 1999-10-03
• Famous town on the Nile — 1997-07-26
• Hieroglyphic stone locale — 1997-05-22