1. Convert hours to seconds:

* There are 60 minutes in an hour and 60 seconds in a minute, so:

8 hours * 60 minutes/hour * 60 seconds/minute = 28,800 seconds

2. Calculate the total distance traveled:

* Distance = Speed * Time

* Distance = (3.00 x 10^8 meters/second) * (28,800 seconds)

* Distance = 8.64 x 10^12 meters

3. Convert meters to kilometers:

* There are 1000 meters in a kilometer, so:

* Distance = (8.64 x 10^12 meters) / (1000 meters/kilometer)

* Distance = 8.64 x 10^9 kilometers

Therefore, a laser beam pulse travels approximately 8.64 x 10^9 kilometers in 8 hours.