kerbol420

Kerbol is very very big. And yet it's curvature seems quite visible from only 1300 meters above its surface. What's going on here? It seems from this diagram that Kerbol should appear as a vast wall: http://wiki.kerbalspaceprogram.com/wiki/File:Kerbol_sizecomp_chart.jpg Here's a screenshot showing a clearly spherical sun not so far beneath me: http://postimg.org/image/mq1reyull/