* Speed of light: Light travels at approximately 299,792,458 meters per second (m/s).

* Time: We're interested in half a second (0.5 s).

Calculation:

* Distance = Speed x Time

* Distance = 299,792,458 m/s * 0.5 s

* Distance = 149,896,229 meters

Therefore, light will travel approximately 149,896,229 meters in half a second.