Science, Space and Technology News 2023
Agriculture in Syria started with a bang 12,800 years ago following a comet fragment’s explosive entry into Earth’s atmosphere. This cataclysmic event, coupled with ensuing environmental changes, compelled the hunter-gatherers of the prehistoric Abu Hureyra settlement to adopt agricultural practices for survival.
Depiction of a pre-Younger Dryas pit house. Numbers represent the approximate locations of samples examined. Credit: UCSB In the 12,800-year-old layers corresponding to the shift between hunting and gathering and agriculture, the record at Abu Hureyra Because the impact appears to have produced an aerial explosion there is no evidence of craters in the ground. “But a crater is not required,” Kennett said. “Many accepted impacts have no visible crater.” The scientists continue to compile evidence of relatively lower-pressure cosmic explosions — the kind that occur when the shockwave originates in the air and travels downward to the Earth’s surface.
, despite an absence of craters. However, it has been argued that the kind of shock-fractured quartz found in the YDB sites is not equivalent to that found in the large crater-forming sites, so the researchers worked to link these deformations to lower-pressure cosmic events.conducted at the Alamogordo Bombing Range in New Mexico in 1945 and in Kazakhstan, in 1949 and 1953. Similar to cosmic airbursts, the nuclear explosions occurred above ground, sending shockwaves toward Earth.
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