This NASA image obtained May 21, 2010 shows the Seagull nebula, seen in this infrared mosaic from NASA's Wide-field Infrared Survey Explorer, or WISE, drawing its common name from it resemblance to a gull in flight. The image spans an area about seven times as wide as the full moon, and three times as high (3.55 by 1.37 degrees), straddling the border between the constellations Monoceros and Canis Major (the Big Dog). Astronomers catalog the nebula as IC 2177. This cosmic cloud is one of many sites of star formation within the Milky Way galaxy. It is located 3,800 light-years away from Earth, inside the Orion spur -- the same partial spiral arm of the Milky Way where our solar system is located. The nebula is nearly 240 light-years across. AFP