An extended view of the Trapezium showing the four energetic massive stars and a plethora of Sun-like stars with surrounding extended emission. The Trapezium is located in the center of the Orion nebula seen here as a blue background glow. Note how the material surrounding the Sun-like stars produces a cometary structure with a bright head and a tail pointing directly away from the energetic central massive stars.
Start with the constellation of Orion. Below Orion's belt is a fuzzy area known as the Great Nebula of Orion or M42. In this nebula is a bright star cluster known as the Trapezium, shown above. New stellar systems are forming there in gigantic globs of gas and dust known as Proplyds. Looking closely at the above picture also reveals that gas and dust surrounding some of the dimmer stars appears to form structures that point away from the brighter stars. The above false color image was made by combining several exposures from the Hubble Space Telescope.