If photons have no mass, how can they have momentum?

If photons can zoom through space and push things even though they're weightless, it’s like a feather giving you a gentle nudge.

Imagine you're playing with your favorite toy car on the floor. You give it a little push, and woosh, it rolls away. That push is momentum. Now imagine instead of pushing it with your hand, you use a tiny, invisible friend called a photon. Even though that photon has no mass, like how a feather feels light in your hand, it still carries enough energy to make the car move, just like how even a small gust of wind can push a leaf.

Think of a trampoline. When you jump on it, you're not just using your weight, you're using your speed and energy too. A photon is like someone jumping lightly but fast enough to make the trampoline bounce back. Even though they’re light, their motion still makes an effect.

So even if photons have no mass, they can still push things because of how much energy they carry, just like a tiny feather can still tickle your nose!