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According to our current understanding of physics, no objects with mass can travel faster than the speed of light in a vacuum. This limitation is described by Albert Einstein's theory of relativity. As objects with mass approach the speed of light, their relativistic mass increases, requiring an infinite amount of energy to accelerate them to or beyond the speed of light. Therefore, particles with mass, such as atoms or subatomic particles, cannot travel faster than light.

However, it is important to note that the theory of relativity does not place any restrictions on phenomena or particles that do not have mass, such as certain types of particles called "massless particles." The most well-known massless particle is the photon, which is the fundamental particle of light. Photons always travel at the speed of light in a vacuum.

In addition to photons, other particles and fields in nature, such as gravitational waves, are also expected to propagate at the speed of light. Gravitational waves are ripples in the fabric of spacetime caused by accelerating massive objects. They were first detected in 2015 and provide further confirmation of Einstein's theory of general relativity.

So, while objects with mass cannot travel faster than light, massless particles like photons and phenomena such as gravitational waves do propagate at the speed of light. They play crucial roles in the fundamental workings of our universe, including the transmission of electromagnetic radiation and the behavior of gravitational interactions.

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