Here's why:
* The Speed of Light: All electromagnetic radiation, including radio waves, visible light, infrared, ultraviolet, and X-rays, travel at the speed of light in a vacuum. This speed is a fundamental constant, approximately 299,792,458 meters per second (approximately 186,282 miles per second).
* Electromagnetic Spectrum: Radio waves and visible light are just different parts of the electromagnetic spectrum. The only difference between them is their wavelength and frequency. Radio waves have much longer wavelengths and lower frequencies than visible light.
Therefore, while they are different parts of the electromagnetic spectrum, they both travel at the speed of light in a vacuum.
