Our Skies Contain Sprites, Elves, Trolls, Pixies, Ghosts, and Gnomes

Yes, really. Exploring the magical world of transient luminous events in the upper atmosphere: sprites, elves, blue jets, trolls, pixies, ghosts, and gnomes. How scientists named these barely-witnessed electrical phenomena after folklore, and why scientific wonder and awe are not opposed to rational inquiry but essential to it.