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... ed and didn't know what to say for a while, her brain had completely lost her ability to think.
What is the concept of more than 7000 light-years?
A light-year is a unit of distance in the universe.
At the speed of light, the distance traveled in a straight line for one year in the cosmic vacuum is one light-year.
A light-year is about 94.6 billion kilometers.
The average human walking speed is 1.1 meters per second.
You can walk about 4 kilometers in 1 ...
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