This new ESO Very Large Telescope image shows the planetary nebula Fleming 1 in the constellation of Centaurus (The Centaur). This striking object is a glowing cloud of gas around a dying star. New observations have shown that it is likely that a very rare pair of white dwarf stars lies at the heart of this object. Their orbital motions can fully explain the remarkably symmetric structures of the jets in the surrounding gas clouds in this and similar objects.

Fleming 1 is an unusual planetary nebula situated in the Centaurus constellation. It has a pair of symmetrical jets spanning more than 2.8 pc and delineated with a number of knots. The jets and knots are moving away from the center of the nebula and were probably ejected 10,000 to 16,000 year ago. The innermost part of the nebula has a butterfly shape and is immersed into a faint halo. The butterfly’s wings point in the direction of jets with their axis titled by 50° to the line of sight. The waist of the “butterfly” is surrounded by a torus of expanding hot gas forming the inner bright ellipse. Fleming 1 is probably 5,000 years old.

Distance 2,400 pc ly