Jedi Explorer was a state-of-the-art freighter designed to navigate uncharted hyperspace routes. She was armed with laser cannons and ion cannons, and had a large cargo hold. Master Skywalker kept a small T-77 Experimental Airspeeder in this cargo hold, which he and Kam used to further explore the ruins of Ossus upon arrival in Explorer.
It was destroyed during the Battle of New Alderaan (Operation Shadow Hand).
Jedi Explorer was later replaced by Jedi Explorer II, used by Luke Skywalker once more to reach Ossus—this time in an attempt to stop the reborn Emperor from stealing Ysanna bodies with which to manufacture clones.