For centuries, humans have wondered whether Earth is unique in the universe, or if similar planets exist out there. Even a decade ago, we still did not know -- but then NASA's Kepler Space Telescope made discoveries that changed everything.
For centuries, humans have wondered whether Earth is unique in the universe, or if similar planets exist out there. Even a decade ago, we still did not know -- but then NASA's Kepler Space Telescope made discoveries that changed everything.
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