DSEV Robert A Heinlein in Earth orbit

Rendered in Bryce. I said in a previous post that the design was imspired by an image I saw (and can't find again) on Tumblr. Zevbutt suggested it was one of the ships from Elite: Dangerous. There's one that's very similar, but I'm not sure... I'm pretty certain that the original image I'm thinking of was a painting, and the ship had a spherical front section like mine. I could be misremembering though.
The background is a NASA image.