Answer: [tex]4.068(10)^{13} km[/tex]
Explanation:
A light year is a unit of length and is defined as "the distance a photon would travel in vacuum during a Julian year at the speed of light at an infinite distance from any gravitational field or magnetic field. "
In other words: It is the distance that the light travels in a year.
This unit is equivalent to [tex]9.461(10)^{12}km[/tex], which mathematically is expressed as:
[tex]1Ly=9.461(10)^{12}km[/tex]
Doing the conversion:
[tex]4.3Ly.\frac{9.461(10)^{12}km}{1Ly}=4.068(10)^{13}km[/tex]
The Answer: The star closest to our sun is 4.2 light years away from the sun.
Explanation:
