## Can physical objects move at the speed of light?

Nothing can travel faster than 300,000 kilometers per second (186,000 miles per second). Only massless particles, including photons, which make up light, can travel at that speed. It’s impossible to accelerate any material object up to the speed of light because it would take an infinite amount of energy to do so.

What happens if an object moves at speed of light?

As an object approaches the speed of light, the object’s mass becomes infinite and so does the energy required to move it. That means it is impossible for any matter to go faster than light travels.

How is the speed of light constant relative to moving objects?

Great question. People are often confused by how speed of light is constant relative to different moving object. But in fact, you were right that speed of light is constant relative to any object moving at a constant velocity. I’m not sure where that 190m comes from, but you’re right that at first glance the combination of distances looks peculiar.

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### Can a particle move faster than the speed of light?

By this reasoning, no particle that is moving slower than the speed of light can ever reach the speed of light (or, by extension, go faster than the speed of light). So what about if we did have a particle that moves faster than the speed of light.

How do photons move at the speed of light?

Moving at the Speed of Light. One of the key insights that Albert Einstein used to develop his theory of relativity was that light in a vacuum always moves at the same speed. The particles of light, or photons, therefore move at the speed of light. This is the only speed at which photons can move. They can’t ever speed up or slow down.

How do objects move in relativity?

Under the theory of relativity, there are actually three ways that objects can move: One of the key insights that Albert Einstein used to develop his theory of relativity was that light in a vacuum always moves at the same speed. The particles of light, or photons, therefore move at the speed of light.

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