Most plants capture sunlight. And the results are usually green. Because in photosynthesis, plant chlorophyll uses [--1--] of blue and our sun’s abundant red, and reflects green. But what if—as many [--2--] suggest—there’s an Earth-like planet with multiple suns? Researchers at England’s University of Saint Andrews say that photosynthetic life on such a planet might end up as a [--3--] black or gray. Or even with a high SPF.

A quarter of all stars like our sun actually exist in multi-star systems. Plants on a planet with two sunlike stars could need protection against too much radiation—they might evolve their own [--4--] sunscreens.

Or a planet with two stars may have one sun-like star, along with a red dwarf star that’s also common in multi-star systems. Any photosynthetic life would be adapted to take advantage of the available light waves.

Plants that relied at times mostly on the dim red dwarf might need light from all across the visible [--5--]. They wouldn’t reflect any wavelengths, so they'd appear black. These ideas were presented at the current Royal Astronomical Society meeting. So for healthy eating on some other planets, try the leafy dark salad.
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