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What would the next alien Earth look like?
In the hunt for exoplanets, astronomers are looking for an Earth-like habitable world
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There are alien worlds light years from Earth that share more than a few similarities with our own planet.
Over the past 20 years, astronomers have found thousands of exoplanets orbiting stars other than our Sun. And of those thousands, a dozen or so are considered to be similar to our own — and have potentially habitable conditions.
We aren't packing our bags and headed towards those planets just yet, but scientists want to get to know those alien Earths better. To get a sense of what we might find, here is a who's who list of six alien planets that are most like Earth.
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