I'm keeping an eye on this game. By what I can tell you are journeying to the center of the galaxy hopping star systems and exploring planets. You'll find resources, treasures, and danger the closer you wind in. You can share your purely scientific discoveries with the community or horde the booty all for yourself (until someone takes it). Obviously there's not going to be the same depth and story as Destiny. Destiny instead focuses on a handful of planets we're familiar with. So that's discovery on a macro scale vs. discovery on a micro scale.