The poem is in the form of a rondeau… Image: NASA's Wide-field Infrared Survey Explorer (WISE) mission presents the " Wreath nebula." Though this isn't the nebula's official name (it's actually called Barnard 3, or IRAS Ring G159.6-18.5) , one might picture a wreath in these bright green and red dust clouds -- a ring of evergreens donned with a festive red bow, a jaunty sprig of holly, and silver bells throughout. Interstellar clouds like these are stellar nurseries, places where baby stars are being born. Image Credit: NASA/JPL-Caltech/UCLA