Definitions
There is 1 meaning of the phrase
Light Second.
Light Second - as a noun
The distance light travels in a vacuum in one second; approximately 300,000 kilometers
Example Sentences
"A light second is a unit of measurement used to describe a distance that light travels in one second."
"It takes around 1.3 light seconds for light to travel from the Earth to the Moon."
"The distance between the Sun and the Earth is about 500 light seconds."
"A light second is roughly equal to 299,792 kilometers."
"In interstellar travel, distances are often measured in light seconds."
