Tuesday, June 3, 2008


Posted by Neill Abayon

The same rules that make Earth plants green may make non-Earth plants yellow or red but likely not blue, according to a NASA study.
Scientist from a range of disciplines studies how plants and some bacteria on Earth absorb and reflect light. More red light reaches plants on Earth, and blue light is the easiest to absorb. So plants make most efficient use of these two, and that leaves green light as largely superflous. For other planets, the researchers calculated which light wave length would be the most abundant on the surface and hence most favourable to photosynthesis.

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