galactographer n.

Early galactographers had defined it as that part of the galaxy which lay between the eastern and southern kingdoms, and the edge of the island-universe.

For to open up another galaxy, even a small one like the G.M.C., is colossal. Think of the man-power needed for such a project. Think of the varieties of man-power—hundreds of sciences were involved. You would need pilots, galactographers, linguists, communications experts, engineers, planetographers, telepathicists, diplomats, government representatives, diovonicists, doctors, naval personnel, tacticians, biologists, ecologists, and just about every other kind of ologist you could think of.

And concerning six hundred and forty thousand populated worlds there is almost no information other than their names and sometimes the location. Some galactographers have estimated that there may be up to ten thousand inhabited planets that aren’t listed at all.