Thus, to be considered as archaeological, the remains, objects or artifacts to be dated must be related to human activity.
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Chronological dating, or simply dating, is the process of attributing to an object or event a date in the past, allowing such object or event to be located in a previously established chronology.
Over the past 15 years, the global community has made a lot of effort in inspiring and engaging women and girls in science.
Unfortunately, women and girls continued to be excluded from participating fully in science.
The spectacular total solar eclipse that swept the United States dominated headlines as it delighted scientists and the public alike in August 2017 (the above image of the Moon transiting across the Sun was taken by NASA’s Solar Dynamics Observatory spacecraft in the extreme ultraviolet spectrum).
The year also brought innovations in spaceflight and surprising insights into species past.
Here are the striking shots from science and the natural world that caught the eyes of Nature’s editors.
GROUND CONTROL: On the Norwegian island of Svalbard, low sun backlights an antenna that downloads data from the Joint Polar Satellite System-1.
A team of NASA optics experts has built a picometer spatial metrology system that may enable a major Agency initiative—to locate and image Earth-like planets beyond the solar system and scrutinize...
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But this method is also useful in many other disciplines.