What is the modern unit for measuring the speed of light?
Miles per hour
Light year
Kilometers per second
Speed unit
Answer
Kilometers per second (km/s) is the modern unit for measuring the speed of light. This unit is used because the speed of light is an extremely large value, and kilometers per second provides a convenient and easily understandable scale for expressing this value. The speed of light is approximately 299,792 kilometers per second in a vacuum.
Stargazing Through Time: The Ole Rømer Astronomical Challenge
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