A splatter of red, denoting galaxies, lies at the center of this image and extends toward the lower left. This is the remnant of a cosmic collision. Eons ago, one group of galaxies plunged into another at millions of miles per hour, leaving a wreckage in its wake. The galaxy cluster El Gordo is all that remains of this raucous event.
To capture the Great Nebula in Orion (M-42; NGC-1976) Tuesday night, Marty Murphy, AD, stacked 18 15-second images of the nebula using a 600-millimeter f/8 telephoto lens. The camera and lens were piggy-backed on a large telescope for tracking during the long exposures. This nebula is faintly visible to the naked eye in dark sky. It is situated in the middle of Orion’s dagger.