In the heroic story mission Road Rage after killing the 3 hydras you hear ghost ask Asher if these are the right vex which includes the lines “you know, as in are these the robots your looking for” assuming ghost is trying to avoid any copyright lawsuits from Lucas film one can only imagine he knows this from either watching Star Wars, or indeed that Jedi’s are alive in the destiny universe somewhere and Ben kenobi had an encounter with a ghost before [spoiler] future DLC confirmed [/spoiler]