In terms of physics, the phrases "light travels" and "light moves" are often used interchangeably to describe the propagation of light through space. However, if we want to draw a distinction between the two, we can consider the following:
Light Travels: When we say "light travels," we are emphasizing the concept that light propagates or spreads out from its source in the form of electromagnetic waves. This description highlights the characteristic behavior of light as it moves through space, obeying certain fundamental properties and laws of physics.
Light Moves: On the other hand, the phrase "light moves" can be seen as a more general statement indicating that light changes its position or location in space. It refers to the fact that light can be detected at different locations and can be observed to propagate in a straight line unless it interacts with other objects or substances.
In summary, while there may not be a significant difference between the two phrases in the context of physics, "light travels" places more emphasis on the specific behavior and properties of light during its propagation, while "light moves" is a broader statement indicating the change in position of light as it propagates through space.