Imagine a habitable planet orbiting a distant star. You’re probably picturing a variation of Earth. Maybe it’s a little cloudier, or covered in oceans. That image may very well be completely off-base. There is good reason to think that the first potentially life-bearing worlds that are now being detected around other stars probably look very different than Earth. Rather, these planets are more likely to look like giant eyeballs whose gaze is forever fixed on their host stars.
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