The Earth-like planets we have found may not be like Earth

We have found plenty of apparently "Earth-like" worlds beyond our solar system, but that does not mean they are living worlds like ours

There are more planets in our galaxy than there are stars, says science writer and astrophysicist Adam Becker. He explains what these "exoplanets" are like to BBC Earth's Melissa Hogenboom and Michael Marshall, with help from the animators at Pomona Pictures.

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