“In our world,” said Eustace, “a star is a huge ball of flaming gas.” Even in your world, my son, that is not what a star is, but only what it is made of.” ― C.S. Lewis, The Voyage of the Dawn Treader Last week, scientists announced the discovery that the universe is vibrating with low frequency gravity waves. Music analogies proliferated. It was a “cosmic bass note”, a “hum”, a “chorus”, the “background sound of the universe”. Astronomer Adam Frank, writing in The Atlantic, put it most poetically: The whole universe is humming. Actually, the whole universe is Mongolian throat singing. Every star, every planet, every continent, every building,…