The Witch Head nebula, named after its resemblance to the profile of a witch, is seen in an undated infrared handout photo from NASA’s Wide-field Infrared Survey Explorer (WISE). Astronomers say the billowy clouds of the nebula, where baby stars are brewing, are being lit up by massive stars. Dust in the cloud is being hit with starlight, causing it to glow with infrared light, which was picked up by WISE’s detectors. (REUTERS/NASA)