speed of light

https://en.wikipedia.org/wiki/Speed_of_light

• https://en.wikipedia.org/wiki/Special_relativity
  • https://en.wikipedia.org/wiki/Spacetime

The speed of light is the max speed anything without matter can travel through space.

• The theory of relatively asserts that time is relative to space.

Here is an example.

Suppose you are in a car moving at 70 mph.

• A vehicle moving at 70 mph next to your vehicle does not look like it is moving.
• A vehicle moving at 200 mph next to your vehicle looks like it is moving faster than your vehicle.
• A vehicle moving at 35 mph next to your vehicle looks like it moving slower than your vehicle.

So, when the speed of light is the max speed anything without matter can travel through space:

• Nothing "moves" when everything is moving at the speed of light because there is no relative difference in speed; only mass.
• Your relative time moves slower as your speed becomes closer to the speed of light (i.e. as you move faster).
• Your relative time moves faster as your speed becomes farther from the speed of light (i.e. as you move slower).

Therefore, time is an observation of how fast you are moving compared to the speed of light.