the instructions for making a sphere using gimp
1 start with a square or rectangle image
2 under filters/animation select optimize for GIF a new window will open with the optimized image
3 in the new window under filters/animation select Spinning Globe. A script dialog box will appear
4 here you can adjust the settings till you find what you like. i chose 100 frames, transparent background, index to n colors(0 = remain RGB): 70 i left work on copy checked.
5 it will go through the process after you press OK
6 If you like the result save. if you want to use result on web in the save dialog box make the file extension gif, this will not happen on its own.
7 when you hit the save button another box will pop up. choose Save as Animation, click export. 1 final box will open i would just click Save.
now have a animated sphere that you can share.