To calculate how long it would take TV pictures transmitted from the Viking space on Mars's surface to reach Earth, we can use the average distance between Mars and Earth, which is about 30 x 10^6 miles.
1. Calculate the speed of light: The speed of light in a vacuum is approximately 186,282 miles per second.
2. Calculate the time it takes for the TV pictures to travel from Mars to Earth:
Time = Distance / Speed
Time = 30 x 10^6 miles / 186,282 miles per second
3. Perform the calculation:
Time ≈ 160.86 seconds
Therefore, it would take approximately 160.86 seconds for TV pictures transmitted from the Viking space on Mars's surface to reach Earth at the speed of light.