At what speed do X-rays travel?

X-rays, like all forms of electromagnetic radiation, travel at the speed of light in a vacuum. The accepted speed of light is approximately 299,792 kilometers per second, which is equivalent to about 186,000 miles per second. This speed is a fundamental constant in physics and applies not only to X-rays but also to visible light, radio waves, and other forms of electromagnetic radiation. Given this understanding, the choice stating 186,000 miles per second accurately represents the speed at which X-rays travel, making it the correct answer.