Feasibility. I couldn't find a extra large and sharp star field, so I made do with what I could find.
Make a Snow Globe challenge.
17 shot panorama stitched, squared, turned upside down, distorted to polar coordinates, and sky replacement (done poorly). A bit of dodge and burn.
EDIT:
Different sky, I like it better.
That's a lot of work! Very cool image.
This is taking it to a whole new level! I love it. Very well done! While looking it over, I wondered how you could make an eyeball-like globe. Anyway, nice work!