Historical clue formulations

• Bonobo relative — 2025-04-13
• Jane Goodall subject — 2024-09-15
• Pioneer in space — 2018-01-03
• Zoo attraction — 2010-03-07
• Early "astronaut" — 2007-08-10
• Cheeta, in "Tarzan" films — 2007-06-18
• Sign language communicator, maybe — 2000-01-12
• Early rocket traveler — 1997-07-02