M20, The Trifid Nebula in Sagittarius with the open cluster M21 to its upper left.
M20, The Trifid Nebula in Sagittarius with the open cluster M21 to its upper left.
M20, The Trifid Nebula in Sagittarius
M20, The Trifid Nebula in Sagittarius with the open cluster M21 to its upper left.
M20, The Trifid Nebula in Sagittarius with the open cluster M21 to its upper left.