The "Speed of Light" is a Structural Constant of the Universe! It is 299,792,458 Meters (about 186,000 miles) per Second.

Why Light Speed Is The LIMIT? What Feynman Uncovered Will COLLAPSE Your Mind. Time and Space are NOT fixed. They are Flexible to Allow Speed of Light to be fix. The Speed of Light is a Structural Constant of the Universe.

Light or visible light is electromagnetic radiation that can be perceived by the human eye. Visible light is usually defined as having wavelengths in the range of 400–700 nanometres, corresponding to frequencies of 750–420 terahertz, between the infrared and the ultraviolet.

Science is the intellectual and practical activity encompassing the systematic study of the structure and behaviour of the physical and natural world through observation and experiment.