The NASA scientists have not explained why plants are green; they have
simply observed a system that works. The fact that there is plenty of blue and
red light available as an energy source does not explain how the highly complex
and precisely shaped molecules that capture the light came into being. The most
rational explanation for any system that works well is that a rational mind
outside the system designed each component to work with the others. The God who
made light on the first creation day designed and made the plants to use "best
light there is".