* The speed of light is constant: In a vacuum, the speed of light is a fundamental constant, approximately 299,792,458 meters per second. It doesn't change regardless of the distance traveled.

* Distance and time are related: What changes with distance is the *time* it takes for light to travel. A longer distance means a longer travel time.

Think of it this way: Imagine a car traveling at a constant 60 miles per hour. Whether it drives for 1 mile or 100 miles, its speed remains 60 mph. The time it takes to travel the distance changes, but the speed itself is constant.

The relationship between distance, speed, and time is given by the following equation:

Distance = Speed x Time

In the case of light, the speed is constant, so:

Distance = Constant Speed x Time

This means distance is directly proportional to time, not speed.