The Red Rectangle Nebula from Hubble
How was the unusual Red Rectangle nebula created? At the nebula's center is an aging binary star system that surely powers the nebula but does not, as yet, explain its colors. The unusual shape of the the constellation of the Unicorn (Monoceros). The nebula is shown here in great detail as recently reprocessed image from Hubble Space Telescope. In a few million years, as one of the central stars becomes into a planetary nebula.
May 09, 2018
via NASA https://apod.nasa.gov/apod/ap180509.html