The correct answer is: C. Romer
Romer was a Danish astronomer who first measured the speed of light in 1676. He did this by observing the eclipses of Io, one of Jupiter’s moons. He found that the time between eclipses was shorter when the Earth was moving towards Jupiter than when it was moving away from Jupiter. This was because the Earth’s motion towards Jupiter caused the light from Io to reach Earth sooner.
Einstein, Newton, and Galileo were all physicists who made important contributions to our understanding of light. However, none of them were the first to measure the speed of light.
Einstein is best known for his theory of relativity, which revolutionized our understanding of space, time, and gravity. Newton is best known for his laws of motion and universal gravitation. Galileo is best known for his contributions to astronomy, including his discovery of the four largest moons of Jupiter.
The speed of light is a fundamental constant of nature. It is the fastest speed at which information can travel through the universe. The speed of light is important in many areas of physics, including optics, electromagnetism, and relativity.