The planet and asteroid are sphere pimitives with materials applied and tweaked in the ‘materials lab’ to get the right coloring and effects.
The first step in the creation and composition of this picture was to set up the two main sphere primitives which would represent the planet and the asteroid.
The planet sphere was resized and had the standard Bryce material ‘Weather map’ assigned to it. This can be found in the ‘Complex fx’ presets library.
For the asteroid the preset ‘Luna’ was applied, which can also be found in the ‘Complex fx’ library.