The Red Rectangle Nebula. An excellent example of a bipolar nebula and a planetary/protoplanetary nebula.

Sourced from:

NASA: http://antwrp.gsfc.nasa.gov/apod/ap040513.html and http://antwrp.gsfc.nasa.gov/apod/image/0405/redrect_hst_full.jpg

ESA: http://www.esa.int/esaCP/SEMHBNGHZTD_FeatureWeek_0.html and http://esamultimedia.esa.int/images/spcs/hubble/hubble20040511a.tiff

Hubble: http://hubblesite.org/newscenter/archive/releases/2004/11/ and http://imgsrc.hubblesite.org/hu/db/2004/11/images/a/formats/print.jpg

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• Red Rectangle at ESA/Hubble