The E:D galaxy is full of unknown (grey) systems which players – if they have the right equipment – can explore and then sell data from to a faction when they're docked in a station with the Universal Cartographics service.
I haven't tried exploration myself yet, but when I do explore a system and identify some planets, I take it the (previously identified) astronomical bodies will still be identified for me the next time I visit that system?
What about for other players? If I explore a system and then sell the data to a faction, can other players purchase that data in Universal Cartographics (in the same or a nearby station belonging to that faction)? Of course I'm assuming here that the currently available cartographics data is not only coming from the players but would love to stand corrected!
If I sell the data in a station belonging to the Federation, I'd assume the other factions won't get access to the data. But does selling it to the Federation also help that faction "spread" to that particular system in any way?
And to sum it up in a more general question, will (the tiny part) of the galaxy where new players start eventually be fully explored, effectively pushing explorers deeper and deeper into the Milky Way?