Astronomy Picture of the Day . The Great Nebula in Orion . ... Credit: Stefan Seip Explanation: The Great Nebula in Orion is a colorful place. ... Long exposure, digitally sharpened images like this, however, show the Orion Nebula to be a busy neighborhood of young stars, hot gas, and dark dust . The power behind much of the Orion Nebula (M42) is the Trapezium - four of the brightest stars in the nebula. ... Publications with keywords: Orion - M42 . Publications with words: Orion - M42 . ...