Answer:
To express the distance between the Earth and the Sun in light years, you can use the fact that one light year is the distance light travels in one year. The speed of light is approximately \( 3 \times 10^5 \) kilometers per second.
Distance in light years = \(\frac{{Distance \, in \, kilometers}}{{Speed \, of \, light \, in \, kilometers \, per \, second}}\)
So, the distance between the Earth and the Sun in light years is:
\[ \frac{{150 \times 10^6 \, km}}{{3 \times 10^5 \, km/s}} = 500 \, seconds \]
Now, convert seconds to years:
\[ \frac{{500 \, seconds}}{{60 \, seconds/minute \times 60 \, minutes/hour \times 24 \, hours/day \times 365 \, days/year}} \]
This is approximately 0.0159 light years. Therefore, the distance between the Earth and the Sun is approximately 0.0159 light years.