So, I'd like to make a rendering of my world to see what it would look like from outer space. I have the map drawn up, and the various features (mostly) designed. Think about it like taking a series of orthographic drawings and turning them into a three-dimensional rendering.
I'd like the final rendering to allow me to take images of the planet, like The Blue Marble (obviously not that detailed - after all, it's a photograph! - but from that position):
What software can help me with that?