What is the approximate speed of light in a vacuum?

Explanation

Light travels at approximately 300,000 kilometers per second in a vacuum, a constant used throughout physics and denoted by the letter c. This is why we see distant stars as they appeared years or even centuries ago, since their light takes that long to reach Earth. According to Einstein’s theory of relativity, nothing with mass can travel faster than the speed of light. Explore more Everyday Science MCQs on mcqstutor to keep practicing.