Aurora Australis, an Elegy Remembering Christopher Koch   Plumes of Aurora Australis ascend to their elegant zenith, the phenomenon visible from Hobart up to Launceston.   You return to the place of your birth when the cycle is at its maximum, a rare solar wind colliding with the Earth’s magnetic field.   Occasional cries of an unknown bird break the quiet, near the spot where your grandmother once read to you from a book of forgotten rhymes.   You were her favourite carried off to a material Babylon, an exile who created worlds where all things roamed free, luminous fictions…