The Kleinmann-Low Nebula.

The most active part of the Orion Nebular Cloud Complex is an area known as the Kleinmann-Low Nebula . There, a cluster of young and forming stars is embedded in a molecular cloud filled with dust . In visible light, the dark dust blocks much of Orion KL 's light, but in the infrared light of the above photograph , the area seems literally to explode. Hot stellar winds flowing off massive young stars in Orion KL region permeate and heat surrounding gas, causing finger-like intrusions . Near the center of Orion KL is IRc2 , a particularly active star estimated to have over 30 times the mass of our Sun . Radio telescopes have recently detected unusual emission from water molecules - maser radiation from the Kleinmann-Low Nebula.