We’ve all learned in school that the speed of light in a vacuum is a constant universal limit, an impassable cosmic boundary.

The observable universe is about 93 billion light-years in diameter.” This can be explained as the distance from the Earth to ...

One way out might be to weaken the constant speed of light. If the speed of light was faster in the early universe, that would also explain the temperature problem. Perhaps light is still slowing ...

Forces and the final velocity of objects can be determined. The speed of light is constant but length and time can change when objects travel at close to the speed of light. These changes depend ...

Humans can't feel constant velocity ... Related: Why is the speed of light the way it is? Most humans can handle acceleration ...