Space and all things NASA make great ski graphics.
NASA makes all of their images available through public domain. They have so much to sift through--planets, equipment, plans, historic events.
Check out their gallery for inspiration: https://www.nasa.gov/multimedia/imagegallery/index.html
While we cannot re-create these specific custom graphics for you, you can use the concept to create something similar for yourself. Talk to us and see what we can do.