Scientists estimate the age of the universe to be approximately 13.8 billion years. What is the future of timekeeping?
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what time is it trả lời Informational
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- Are the clocks currently moved forward in [location]?
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- A knot is a unit of speed equal to one nautical mile per hour. It is historically derived from the practice of using a knotted rope and a sandglass to measure a ship's speed. What is a parsec?
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- Is the practice of adding leap seconds continuing?
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