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  1. Anthropology

    A Greek skull may belong to the oldest human found outside of Africa

    Humans possibly reached southeastern Europe by 210,000 years ago.

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  2. Planetary Science

    See how visualizations of the moon have changed over time

    To celebrate the 50th anniversary of the moon landing, here’s a collection of images that show how the moon has been visualized over the ages.

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  3. Astronomy

    Moons that escape their planets could become ‘ploonets’

    If giant planets in other star systems lose their moons, the freed objects could become “ploonets,” and current telescopes may be able to find them.

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  4. Anthropology

    Ancient humans used the moon as a calendar in the sky

    Whether the moon was a timekeeper for early humans, as first argued during the Apollo missions, is still up for debate.