How fast do all members of the electromagnetic spectrum travel in a vacuum?

All members of the electromagnetic spectrum, which includes radio waves, microwaves, infrared, visible light, ultraviolet, X-rays, and gamma rays, travel at the same speed in a vacuum. This speed is a fundamental constant known as the speed of light, denoted by the symbol "c."

The accepted value for the speed of light in a vacuum is approximately 3 x 10^8 meters per second. This constant is crucial in various fields of physics, impacting the understanding of concepts like wave propagation, energy transfer, and the behavior of light.

In a vacuum, electromagnetic radiation does not encounter any barriers, allowing it to travel unimpeded at this maximum speed. This characteristic makes it distinct from other objects that might experience friction or other forces that would slow them down.