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What would aliens actually look like? Forget the green humanoids… the real answer is way more wild. Scientists believe alien life would follow the same evolutionary rules as life on Earth. On our planet, eyes evolved many times because vision is powerful—so aliens might have eyes too… but possibly more advanced. Depending on their world, they could have tentacles, wings, or no limbs at all. On high-gravity planets, they’d likely be short and strong. On ocean worlds, they might resemble intellige