October 4, 1990: This composite image shows the location of a one-light-year square region in the Orion Nebula which was imaged by NASA's Hubble Space Telescope. The area is near the edge of a cavity of ionized hydrogen, which is heated by ultraviolet radiation from a star cluster at the center of the nebula.
See the rest:Credit: NASA, the Wide Field Planetary Camera Science Team, and David Malin (Anglo-Australian Southern Observatory)