Big news hit the physics world today. Researchers at the LIGO observatory became the first to verify the existence of gravitational waves. The waves were detected after the collision of two black holes about 1.3 billion years ago (that's how long it took for them to reach Earth).
The major implication of this observation is that the graviton, a theoretical particle that is thought to be the carrier of gravitational waves, does in fact exist. We may not be able to detect it since it is massless- as verified by these waves moving at the speed of light- but if we are to assume that the wave-particle duality is true for all waves in the universe, then there's no denying it.
That being said, gravity behaves in very different ways than all the other forces, being much weaker and acting on far greater distances, so we should be cautious when making assumptions about the waves it generates. The only thing this discovery proves about the graviton is that it is in fact massless, like the photon.
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