Orion Bright Bar
mile-ye deraxšân-e Šekârgar, ~ ~ Orion
Fr.: barre brillante d'Orion
A prominent emission ridge in the → Orion Nebula located approximately 2' southeast of the → Trapezium cluster. Various observations have suggested that it is an escarpment in the main → ionization front of the Nebula seen almost edge-on. The Orion Bar is one of the nearest and best-studied → photodissociation regions.