There are the aliens I cut out, post detonation! Detail from Cai Guo-Qiang, Childhood Spaceship, 2012, gunpowder on paper, 400 x 3300 cm (157 1/2 x 1299 3/16 in.), commissioned by The Museum of Contemporary Art (MOCA), Los Angeles, photo by Russell Bates

There are the aliens I cut out, post detonation! Detail from Cai Guo-Qiang, Childhood Spaceship, 2012, gunpowder on paper, 400 x 3300 cm (157 1/2 x 1299 3/16 in.), commissioned by The Museum of Contemporary Art (MOCA), Los Angeles, photo by Russell Bates