sources.txt

The moon
Torben Bjørn Hansen. CC-BY
http://www.flickr.com/photos/torbenh/3817150315/in/faves-jasonidzerda/
Rotated and clipped

The Earth
Debian wallpaper GPL (BlueMarbleWest.jpg)
Removed atmosphere using Gimp, and then process in Inkscape, adding various effects, stars, and
cropping it in various places.

All other images drawn from scratch by Nick Robinson.