Than quotes his colleague, geneticist Shil DasSarma, as saying, "If you happen to see a planet that is at this early stage of evolution, and you're looking for chlorophyll, you might miss it because you're looking at the wrong wavelength."
In New Scientist, Jeff Hecht agrees that "the greenery on other planets may not be green." He quotes Nancy Kiang of NASA as saying that extraterrestrial plants will look different because they have evolved their own pigments based on the colors of light reaching their surfaces.
Saturday, April 14, 2007
Search for Purple Planets
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