Wrong! Correct answer is D. Interesting Info: Astronauts took mirrors to the moon and set them up so that laser beams from earth could strike them and reflect back to earth. The time that this took was measured, and, since the laser beam traveled at the speed of light, a distance could be calculated.
Correct! Interesting Info: Astronauts took mirrors to the moon and set them up so that laser beams from earth could strike them and reflect back to earth. The time that this took was measured, and, since the laser beam traveled at the speed of light, a distance could be calculated.