T. A. Rector/University of Alaska Anchorage, H. Schweiker/WIYN and NOAO/AURA/NSF
Pop goes the supernova! Actually, that's planetary nebula PN G75.5+1.7, or better known as the Soap Bubble Nebula, which was discovered by amateur astronomer Dave Jurasevich back in 2008.
Just look at it and wonder what other marvels does the Universe have in stock? Link