change dimensions
black background, white border
delete extra files
Merge branch 'master' of https://github.com/jinpan/spacegoldberg
Merge branch 'master' of https://github.com/jinpan/spacegoldberg
Merge branch 'master' of https://github.com/jinpan/spacegoldberg
change radius to use param
add images, use addPlanet function for targets
Merge branch 'master' of https://github.com/jinpan/spacegoldberg
put targets back, add remaining images