Eight Minutes of Light, Thirteen Years of Imagined Sound: A Sun-Vanish Thought Experiment

If the Sun vanished instantly, Earth would still receive sunlight for about 8 minutes 19 seconds because those photons were already en route. A hypothetical sound wave moving through 20°C air would take about 13.82 years to cross the 1 AU gap, illustrating the enormous speed gap between light and sound and that space cannot carry ordinary sound. In reality, sound cannot travel through interplanetary space, gravity changes would propagate at the speed of light, and the term “roar” is a metaphor for the comparison, not a literal measurement; the piece clarifies the thought experiment’s physics and its limits.