> Contrarily, eyes have evolved independently in many organisms over a dozen times. I'd argue that this is because we all have the sun in common. On a planet

> Contrarily, eyes have evolved independently in many organisms over a dozen times. I'd argue that this is because we all have the sun in common. On a planet that orbits a star with a different spectrum or a planet that has a different atmospheric makeup, "vision" might look very different to what we're used to.