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NASA finds 'Earth's bigger, older cousin'
NASA said its Kepler spacecraft has spotted "Earth's bigger, older cousin": the first nearly Earth-size planet to be found in the habitable zone of a star similar to our own.
01:18
- Source:
CNN/NASA
Amazing Outer Space
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SpaceX rocket launch lights up evening sky
01:09
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- Source:
CNN Business
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Scientists detect 'fingerprint' of earliest light in the universe