🔄FROM THE ARCHIVE: A thought experiment explores the awesome power of our star.
The sun's surface is a roiling soup of superheated plasma. If we could hear its motion as sound energy, the roar would be audible on Earth — 92 million miles away. It’s dawn. The sun crests the horizon, bringing with it the first flush of light and the arrival of a new day.
“The sun is extraordinarily loud,” says heliophysicist Craig DeForest, of the Southwest Research Institute’s Department of Space Studies. He responded to ain 2015 asking what it would be like if we could hear the sun. Based on some quick calculations the answer is clear, he says. The sun would be absolutely deafening.
Convection cells on the sun, imaged by the Daniel K. Inouye Solar Telescope. Each is about the size of Texas, on average. The sound itself would be something like a dull roar, DeForest says, because the sound waves coming at us would be composed of so many different frequencies. Imagine standing next to Niagara Falls all the time .But to concoct a world where the sun is audible, we need to forget a few key things: The vacuum of space, of course, but also the fact that sound waves tend to steepen as they travel over long distances.
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