作业帮"光年"用英语怎么解释
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"光年"用英语怎么解释
"光年"用英语怎么解释
"光年"用英语怎么解释
light-year
The distance that light travels in a vacuum in one year, approximately 9.46 trillion (9.46 × 1012) kilometers or 5.88 trillion (5.88 × 10 12) miles.
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light-year 或 lightyear
1 light-year = 9.4605284 × 1015 meters
A light-year is a unit of length used by astronomers to measure interstellar distance (the distance between stars). A light-year i...
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light-year 或 lightyear
1 light-year = 9.4605284 × 1015 meters
A light-year is a unit of length used by astronomers to measure interstellar distance (the distance between stars). A light-year is defined as the distance that light will travel in a year. If the speed of light is 186,000 miles per second (300,000 km per second), then calculate the distance that light will travel in one year. Express your answer in miles per year.
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