Xnar (or Barnard 33E3) was a inhabited planet located in the Horsehead Nebula. It was a isolated planet due to the xenophobic Xnarians and it's deep location in the Horsehead Nebula. Xnar had a similar, although not full identical, geology to Class-M mars, the only difference was that it had 1 super-continent and 3 other geological bodies on the other side.