Question:

How many light years is 3.6 billion miles?

Answer:

2.116305134e+13 miles

More Info:

A light-year (symbol: ly), sometimes written light year or lightyear, is an astronomical unit of length equal to just under 10 trillion kilometres (or about 6 trillion miles). As defined by the International Astronomical Union (IAU), a light-year is the distance that light travels in vacuum in one Julian year.

The light-year is most often used when expressing distances to stars and other distances on a galactic scale, especially in non-specialist and popular science publications. The preferred unit in professional astrometry is the parsec (symbol: pc, approximately 3.26 light-years), because it can be more easily derived from, and compared with, observational data.

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