Why Is Light the Fastest Speed Possible?

Nothing can travel faster than 300,000 kilometers per second (186,000 miles per second). Only massless particles, including photons, which make up light, can travel at that speed. It's impossible to accelerate any material object up to the speed of light because it would take an infinite amount of energy to do so.

Is the speed of light really the fastest?

Traveling at over 186,000 miles per second in a vacuum, light is the fastest-moving thing we know of.

Why is light the fastest wave?

Light doesn't need a medium to travel. The speed of sound through air is about 340 meters per second. It's faster through water and it's even faster through steel. Light will travel through a vacuum at 300 million meters per second.