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Interesting Facts About Time, The Fourth Dimension, And Time Travel

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Interesting Facts About Time, The Fourth Dimension, And Time Travel Time is perhaps the greatest mystery of all and is deeply wrapped up in our conscious experience of things. Since antiquity, time has naturally attracted the interest of philosophers and scientists determined to understand and explain its true nature. At the heart of the question is whether time is an actual reality of the physical world or simply an artificial construct of the human mind. The pre-Socratic Greek philosopher Parmenides, for example, saw time as merely an illusion, while his contemporary Heraclitus believed the flow of time to be real and the very essence of reality itself. For Newton time was absolute and moved at a consistent pace everywhere throughout the universe, while with Einstein time became more flexible and relative in scope. Nevertheless, the concept of time continues to be one of nature’s greatest mysteries and no one has been able to fully explain exactly what it is really. Four-Dimensional
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EARTH (Known Life Habitat) Earth   is the third   planet   from the   Sun   and the only   astronomical object   known to harbor and support   life . About 29.2% of Earth's surface is land consisting of continents and islands. The remaining 70.8% is   covered with water , mostly by oceans, seas,   gulfs , and other salt-water bodies, but also by lakes, rivers, and other freshwater, which together constitute the   hydrosphere . Much of   Earth's polar regions   are covered in ice. Earth's outer layer is divided into several rigid  tectonic plates  that migrate across the surface over many millions of years, while its interior remains active with a solid iron  inner core , a liquid  outer core  that generates  Earth's magnetic field , and a convective  mantle  that drives plate tectonics. Earth's atmosphere consists mostly of nitrogen and oxygen. More solar energy is received by tropical regions than polar regions and is redistributed by atmospheric and ocean circulat
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