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Scientists have calculated the Earth to be 4.54 billion years old, with an uncertainty of 50 million years on either side.

There's nothing innate about the Earth or its atmosphere that marks the boundaries of low Earth orbit. This is a distinction ...

Scientists have discovered an Earth-like planet orbiting a dead star 4,000 light years from here, giving us a humbling glimpse into Earth's likely fate.Published in Nature Astronomy, the planet, ...

Ever since the ancient Greeks first made observations of the circular Moon and the skies, scientists have known that the ...