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It would not because a light year is too large a unit. A more appropriate measurement unit is the Astronomical Units (AU), the average distance from the Sun to the Earth.

The Solar system is thought to extend to the Oort Cloud, a theorised collection of icy objects which orbit the sun at a distance of approx 1.9 light years = 100,000 AU.


The Heliopause, which is the distance at which the Solar Wind, (the Sun's radiation) is stopped by the interstellar medium, is only around 120 AU.


The outermost planet, Neptune, has a radius of approx 30 AU = 0.0005 light years - an indication that a light year is not an appropriate measurement unit..

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