I made several 4k skyboxes in space engine and wanted to share them.
Here is an imgur album of the skybox. http://imgur.com/a/uoKV0
Here is the forum thread: http://forum.kerbalspaceprogram.com/index.php?/topic/164279-13-nucleartaxis-4k-skybox-kollection-nebulae-and-the-galactic-core/