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A black hole jet works like an express train: a fast core spawns elusive particles, while the outer shell lags behind with the signal.
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A giant black hole fires a plasma jet, where the speed inside is 20 times greater than outside. The fast core gives birth to neutrinos, while the slow shell 'detains' the radio signal for years. The double jet is the key to unraveling the origin of the most elusive particles.
🎯 The core streaks across the sky as if covering in one year a distance that light takes 21 years to travel — but this is just a spatial illusion, caused by the jet being aimed precisely in our direction.