Stonehenge stones came from an even older Welsh stone circle

Waun Maun was an ancient Welsh stone circle that had an awful lot in common with Stonehenge.

Credit: Ty Welch/Unsplash
  • New research finds that Stonehenge's' bluestones were taken from another, older stone circle in Wales.
  • The site of the older circle is near the quarry from which the bluestones likely came.
  • Researchers believe that at some point the original Welsh builders moved en mass eastward to England, bringing their stones with them.
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    New animation shows a billion years of continental drift

    A new model of plate tectonics offers a chance to look back a billion years with new found accuracy.

    • A new way of looking at plate tectonics offers evidence for how the world looked up to a billion years ago.
    • By focusing on plate boundaries rather than the continents and land itself, it avoids the pitfalls of other methods.
    • The model doesn't account for everything but is still a great step forward in our understanding of continental drift.
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    A 62-year old Russian mystery (and conspiracy theory) has been solved

    Some mysteries take generations to unfold.

    Credit: Hикита Чертков / Adobe Stock
    • In 1959, a group of nine Russian hikers was killed in an overnight incident in the Ural Mountains.
    • Conspiracies about their deaths have flourished ever since, including alien invasion, an irate Yeti, and angry tribesmen.
    • Researchers have finally confirmed that their deaths were due to a slab avalanche caused by intense winds.
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    Mars had up to 20 separate ice ages, discover scientists

    A new study analyzed Martian glaciers to discover that the planet had numerous ice ages.

    Credit: ESA/DLR/FU Berlin, CC BY-SA 3.0 IGO
  • Researchers find that Mars had from six to 20 distinct ice ages over 300 to 800 million years.
  • The scientists analyzed data and high-resolution photos from Mars to reach their conclusions.
  • The study has implications for understanding the planetary history of the Red Planet.
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    NASA images of Mars reveal largest canyon in the solar system

    Valles Marineris on Mars is 10 times longer and three times deeper than Earth's Grand Canyon.

    • The HiRISE instrument aboard NASA's Mars Reconnaissance Orbiter captured high-resolution images of Valles Marineris.
    • Valles Marineris stretches roughly 2,500 miles across the Martian surface, and was likely formed by geologic faulting caused by volcanic activity.
    • NASA's Perseverance rover is set to land on Mars in February 2021, where it will search for signs of ancient life.
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