Deep Space 1, the first spacecraft to use an ion drive, also had Lisp on board: https://baltazaar.wordpress.com/2009/07/20/a-story-about-lisp-remote-debugging/

Deep Space 1, the first spacecraft to use an ion drive, also had Lisp on board: https://baltazaar.wordpress.com/2009/07/20/a-story-about-lisp-remote-debugging/ https://baltazaar.wordpress.com/2009/07/20/a-story-about-lis...