In Photoshop 1. Begin with two layers:
a marbled texture
(for your planet) and a
black sky layer.
2. Make a circle selection
on the marbled
layer. Invert the selection
(Select > Inverse),
and hit delete.
3. Invert the selection
again, then choose
Filter > Distort >
Spherize. Set amount
to 50, and click OK.
4. Deselect your
planet circle (Command-
D). Select
Layer > Layer Style >
Blending Options.
Adjust Outer and
Inner Glow to make it
appear more realistic.
