How long does it take for light from the sun to reach Earth? 🔊
Light from the sun takes approximately 8 minutes and 20 seconds to reach Earth. This travel time is a result of the vast distance between the Earth and the Sun, which is about 93 million miles (150 million kilometers) away. Light moves at a speed of about 186,282 miles per second (299,792 kilometers per second) in a vacuum. This phenomenon of light travel time illustrates the concept of the astronomical unit, which is commonly used in measuring distances within our solar system. Understanding this time frame is essential for comprehending solar events and their impact on Earth.


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