If you can look at the older preorder bonus posters for the game , you can see the traveller in direct comparison to the earth http://fav.me/d6b2gfm It's hard to gauge the exact scale of the earth in the poster , but by looking at the curve of the Earth , you can find a rough circumference of the earth in the photo . finding the circumference of the earth in the photo and scaling it against the actual circumference of the earth gives a fairly accurate estimate to the size of the traveller . I feel that this is easier than measuring it compared to skyscrapers of unknown height and distance to the traveller .