mysterious

  • HistoryPhoto of The Mysterious Lost Underground Civilization of the Grand Canyon

    The Mysterious Lost Underground Civilization of the Grand Canyon

    Lying within the U.S. state of Arizona is one of the most majestic natural wonders of our planet, the Grand Canyon. Carved over hundreds of millions of years by the Colorado River and measuring 277 miles (446 km) long, up to 18 miles (29 km) wide, the Grand Canyon is a major natural phenomenon, but it is also a place…

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  • SciencePhoto of Astronomers Try To Explain Mysterious ‘Photon Belt’

    Astronomers Try To Explain Mysterious ‘Photon Belt’

    Our solar system is passing through a cloud of interstellar material that shouldn’t be there, astronomers say. And now the decades-old Voyager spacecraft have helped solved the mystery. The cloud is called the “Local Fluff.” It’s about 30 light-years wide and holds a wispy mix of hydrogen and helium atoms, according to a NASA statement released today. Stars that exploded…

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