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13 cze 2024 · For most space objects, we use light-years to describe their distance. A light-year is the distance light travels in one Earth year. One light-year is about 6 trillion miles (9 trillion km). That is a 6 with 12 zeros behind it!
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A light-year, alternatively spelled light year (ly), is a unit of length used to express astronomical distances and is equal to exactly 9,460,730,472,580.8 km (Scientific notation: 9.4607304725808 × 10 12 km), which is approximately 5.88 trillion mi.
Light-year is the distance light travels in one year. Light zips through interstellar space at 186,000 miles (300,000 kilometers) per second and 5.88 trillion miles (9.46 trillion kilometers) per year. We use light-time to measure the vast distances of space.
Light is incredibly fast - it can circle the Earth about seven and a half times in just one second. So, in a year, light can travel about 9.46 trillion kilometers or 5.88 trillion miles. Size Comparison
The light-year is a measure of distance, not time. It is the total distance that a beam of light, moving in a straight line, travels in one year. To obtain an idea of the size of a light-year, take the circumference of the earth (24,900 miles), lay it out in a straight line, multiply the length of the line by 7.5 (the corresponding distance is ...
31 mar 2023 · Just one light-year away from Earth is mind-boggling far away. CNN talked to science educator and engineer Bill Nye to attempt to understand the enormity of the universe and how we measure...
15 gru 2022 · The International Astronomical Union defines a light year as the distance traveled by light in one Julian year or 365.25 days in vacuum.
