Discovery, Exploration
The unmanned Centauri Expedition departed System Sol.Tellus (then known as "Earth") in 2232, using early skip-drive technology. It was the first successful interstellar expedition, reaching Carn-devis 166 ("Alpha Centauri") in 2235. The Centauri Venture gathered data about the Centauri system during the two years required for the ship to recharge its skip-drive cells, and returned in 2241.
First practical use of skip-drive ship technology