1. Understand the Units:

* Light-year: The distance light travels in one year.

* Kilometer: A unit of distance in the metric system.

2. Conversion Factors:

* Speed of light: Approximately 299,792,458 meters per second (m/s)

* Seconds in a year: 31,536,000 seconds

3. Calculation:

* Distance in meters: (Speed of light) * (Seconds in a year) * (6.5 years)

= (299,792,458 m/s) * (31,536,000 s/year) * (6.5 years)

≈ 6.16 x 10^16 meters

* Distance in kilometers: (Distance in meters) / 1000

= (6.16 x 10^16 meters) / 1000

≈ 6.16 x 10^13 kilometers

Therefore, 6.5 light-years is approximately 61.6 trillion kilometers.