Astronomy Picture of the Day . ... Credit Copyright: NASA , JPL-Caltech , UCLA Explanation: The Great Nebula in Orion is a intriguing place. ... But this image , an illusory-color composite of four colors of infrared light taken with the Earth orbiting WISE observatory , shows the Orion Nebula to be a bustling neighborhood or recently formed stars, hot gas, and dark dust. ... Publications with keywords: Orion - Orion Nebula - infrared . Publications with words: Orion - Orion Nebula - infrared . ...