Scientists ponder plant life on extrasolar Earthlike planets

Plants on extrasolar planets resembling Earth could be as black as these eggplants.Washington University biology and chemistry professor Robert Blankenship and his colleagues are seeking clues to life on extrasolar planets by studying various biosignatures found in the light spectrum leaking out to Earth. They are speculating on what kind of photosynthesis might occur on such planets and what the extrasolar plants might look like.