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Apr 2, 2018 at 18:48 vote accept James
Feb 16, 2018 at 21:52 comment added Draco18s no longer trusts SE The increased day brightness also assumes that the planet is the same distance away from its stars as Earth, which is unlikely.
Feb 16, 2018 at 16:10 comment added Luaan Decreased sensitivity to light is unlikely, I think. The suns still set, and vision in the dark would still be important - on Earth, even animals that don't have a significant night-life still see pretty well in the dark; not to mention that sight developed in water, where it was much darker than on the surface anyway, so if this planet had similar enough conditions for life, darkness would still be a significant factor in the evolution of sight. A more active system (better pupils or even a different lid construction) seems more likely. If the light is even brighter in the first place :D
Feb 16, 2018 at 16:03 history answered JBH CC BY-SA 3.0