So a rocket moves by having a big explosion push it. A car moves by little tiny explosions moving things and then mechanics to get it to the wheels, how does light power itself to move? especially with how fast it moves?
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A rocket does not need a big explosion to move. It needs the big explosion to get it up to its final speed. When it’s in space, it will continue to move forever with no added fuel, because there is no air friction to slow it down.
Cars need fuel to move because they are on the surface of the Earth, so they are constantly experience friction. If they were launched into space they could move forever with no fuel, but on the surface of the Earth they keep needing extra energy to overcome air and ground trying to slow it down.
Light is made of tiny particles. They can be absorbed by matter, but other than that, they experience no friction – at that scale there is nothing to experience friction with. Once created, they will move at a constant speed forever until something diverts them.
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