Earth, a Bitmap Trace. The Gimp was used to scale, reduce colours. This was a challenge to find the right settings to create a smaller file yet be visually pleasing to look at. Enjoy!
Original Public Domain file is at http://upload.wikimedia.org/wikipedia/commons/9/97/The_Earth_seen_from_Apollo_17.jpg
Astronaut Bitmap Trace image. The Gimp Quick Mask to the rescue!! Isolated the Astronaut from the image and let Inkscape to do its magic. If anyone is interested on the cleaned up image let me know.
The original public domain image can be found at http://en.wikipedia.org/wiki/File:Astronaut-EVA.jpg