https://www.publicradiotulsa.org/2012-12-14/50-years-after-first-interplanetary-probe-nasa-looks-to-future
50 Years After First Interplanetary Probe, NASA Looks To Future
Sep 3, 2021 - Mariner 2's 1962 mission to Venus was the first time any spacecraft had gone to another planet. Before the mission, very little was known about the planets,...
interplanetary probeyearsfirstnasalooks
https://www.space.com/4769-asteroid-probe-begins-interplanetary-cruise.html
Asteroid Probe Begins Interplanetary Cruise | Space
Dec 20, 2007 - Dawn spacecraft sets off on voyage to see space rocks.
asteroidprobebeginsinterplanetarycruise