A portion of the Cygnus Loop. Covering a region on the sky six times the diameter of the full Moon, the Cygnus Loop is actually the expanding blastwave from a stellar cataclysm – a supernova explosion – which occurred about 15,000 years ago; ESA/Digitized Sky Survey (Caltech) [1500 x 746] via /r/spaceporn http://ift.tt/1S6qCcl – Gatlinburg Garden Castle Rainbow Tower Library Imagination Station Temple Water Spirit Guardian Labyrinth Treasury Magic Healing