* Photons are massless: They have no rest mass, meaning they don't have any intrinsic mass when they're at rest. This is different from objects like cars or balls, which have mass even when they're not moving.
* Photons are always moving: Photons travel at the speed of light, which is the fastest speed possible in the universe. They don't slow down or stop.
* Photons are packets of energy: They are quantized bundles of electromagnetic radiation, carrying energy and momentum.
So, what makes photons "move" is that they are fundamental particles of light and carry energy and momentum in a way that makes them propagate at the speed of light.
Think of it this way: Imagine a wave on the surface of a pond. The wave itself doesn't have a physical mass that moves. Instead, the wave is a disturbance that travels across the surface of the water, transferring energy and momentum. Similarly, photons are like waves of electromagnetic energy that propagate through space, carrying energy and momentum with them.
To summarize: Photons don't move like objects with mass. They are energy carriers that propagate at the speed of light due to their fundamental nature as particles of light.
