The average life span in the United States is about 70 years. Does this mean that it is impossible for an average person to travel a distance greater than 70 light-years away from the earth? (A light-year is the distance light travels in a year.) Explain.
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The average life span in the United States is about 70 years.
Does this mean that it is impossible for an average person to travel a
distance greater than 70 light-years away from the earth? (A light-year
is the distance light travels in a year.) Explain.
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