These potentially habitable exoplanets can see Earth as it evolves
By Ashley Strickland, CNN As human civilization began to flourish on Earth about 5,000 years ago, 1,715 star systems within 326 light-years of Earth could have seen our planet over that time. And over the next 5,000 years, 319 more star systems will be able to see Earth. If there are exoplanets orbiting these nearby
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