Star HD 44179 is surrounded by a quite extraordinary-looking formation known as the Red Rectangle.
Hubble's newest, more detailed image shows the unearthly nebula is shaped more like an X, with additional lines of glowing gas. The star at the center is believed to be similar to the sun, but near the end of its life, spewed gas and other materials to form the oddly shaped surrounding nebula.
The Red Rectangle is an unusual example of what is known as a proto-planetary nebula. These are old stars, on their way to becoming planetary nebulae. Once the expulsion of mass is complete, a very hot white dwarf star will remain and its brilliant ultraviolet radiation will cause the surrounding gas to glow. The Red Rectangle is found about 2,300 light-years away in the constellation Monoceros the Unicorn.