The speed of light is approximately 299,792,458 meters per second or 186,282 miles per second. To calculate the time it takes for light to travel from the sun to Earth, we need to divide the distance between the sun and Earth by the speed of light.

Given distance from the sun to earth is 1.496 X 108 km, we need to convert it to meters:

1.496 X 108 km = 1.496 X 10^11 meters

Now, let's calculate the time it takes for light to travel this distance:

Time = Distance/ Speed of light

= (1.496 X 10^11 meters) / (299,792,458 meters per second)

Calculating the result:

Time ≈ 499 seconds

Therefore, it takes approximately 499 seconds or about 8 minutes and 19 seconds for light to travel from the sun to Earth.