Since Mars is 1.52x as distant from the Sun as Earth is, then it follows that it will take light that much longer to reach Mars. Since, it takes light about 8 minutes and 20 seconds to reach Earth, it therefore will take it 81/3 X 1.52=12 2/3 minutes to reach Mars. Or about 12 minutes and 40 seconds.
Since Mars is 1.52x as distant from the Sun as Earth is, then it follows that it will take light that much longer to reach Mars. Since, it takes light about 8 minutes and 20 seconds to reach Earth, it therefore will take it 81/3 X 1.52=12 2/3 minutes to reach Mars. Or about 12 minutes and 40 seconds.
+8262 On average in its orbit, Mars is about 228,000,000,000 meters away from the sun (that's 2.28 x 1011 m in scientific notation). Light travels at 300,000,000 meters/second (3x 108 m/s). To get the answer, divide the distance by the speed. You'll find that it takes 760 seconds, or 12 minutes and 40 seconds for sunlight to reach Mars. It takes light about 8 minutes to travel from the Sun to Earth.
Source(s):
http://athena.cornell.edu/kids/cs_calvin_questions.html
12 minutes and 40 seconds for sunlight to reach Mars
