Will a vacuum affect how the speed of light travels? - Quora
How fast does the speed of light travel? Is there anything faster than the speed of light? - Quora
Does light travel forever or does it eventually fade? - Quora
What is faster, light or sound? - Quora
What is “time”?
Through which medium does light travel the fastest? - Quora
How can someone travel through nothing (that is light traveling through space or a vacuum)? - Quora
How does a light beam travel trough vacuum? - Quora
Why can light travel through a vacuum whereas sound cannot? - Quora
Why doesn't light just run out of energy and stop - how can it go billions of miles and still be traveling at the speed of light? - Quora
What is “time”?
Why can light travel through a vacuum whereas sound cannot? - Quora
If the speed of light is constant, how come it travels slower in water than in air? - Quora
Is there a medium less dense than a vacuum, in which light can travel faster than c? - Quora
