My original tumblr post was here. This image was researched by Bacchus at ErosBlog as part of the “Δ commission.” The research was originally published at Hedonix as “Δ 076 – Astrogirl.” Here is what Bacchus found.

This artwork is called Astrogirl where it appears on the website of artist Michael Komarck. A brief bio of the artist is here, and Wikipedia has a few more details here.