Peripheral nebular regions of the Orion Complex

The peripheral nebular regions of the Orion Complex typically include small clouds and clumps of interstellar dust located on the outermost edges of the large nebular complex to which they belong. Most of these clouds are situated in the western part of the complex, spanning the constellations of Orion and Eridanus.

These clouds often exhibit a "cometary" and elongated appearance due to the impact of the stellar wind from the brightest stars of the Orion OB1 association. Consequently, they display a "tail" of dissolving gas in the opposite direction from these stars. This interaction has, in some cases, also facilitated star formation processes.