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The Engraved Hourglass Nebula (also known as MyCn 18) is a young planetary nebula in the southern constellation Musca about 8,000 light-years from Earth. It was discovered by Annie Jump Cannon and Margaret W. Mayall during their work on an extended Henry Draper Catalogue (the catalogue was built between 1918 and 1924).
NGC 1514: When William Herschel saw the bright star in the heart of this planetary nebula, he realized that he wasn't looking at clusters but through gas and dust. As a result, he coined the name planetary nebula, because they shared the coloration of the recently discovered Uranus.Saturn Nebula NGC 7009: Located in the constellation Aquarius, the Saturn Nebula, or NGC 7009, has a bright central star surrounded by a football shaped array of gas and dust.Stingray Nebula (Hen-1357): The youngest known planetary nebula, Hen-1357 is as large as 130 solar systems.GC 1514: When William Herschel saw the bright star in the heart of this planetary nebula, he realized that he wasn't looking at clusters but through gas and dust. As a result, he coined the name planetary nebula, because they shared the coloration of the recently discovered Uranus.