Introduction - If you have any usage issues, please Google them yourself
In the sun, the Earth as an example, the sun as a light source, simulate the Earth rotation around the sun light changes. Thus, the need to set up a light source- the sun, setting two materials- the sun and the Earth material material.
The sun s rays to white, middle position in the frame. The material of the sun setting slightly exudes red light, the earth material to emit a slightly dim blue light and reflects blue light, mirror the index is set to a relatively small value. For simplicity, no longer consider the relationship between the Sun and Earth s size, with the same size of a sphere instead.