Dust and the Helix Nebula –Ｃosmic eye

I subscribe Nasa Image of the Day in My iGoogle. And recently A lot of nice image of the universe were published. It’s amazing when I saw this image of Helix Nebula. Dust makes this cosmic eye look red. This eerie Spitzer Space Telescope image shows infrared radiation from the well-studied Helix Nebula (NGC 7293), which is a mere 700 light-years away in the constellation Aquarius. The two light-year diameter shroud of dust and gas around a central white dwarf has long been considered an excellent example of a planetary nebula, representing the final stages in the evolution of a sun-like star.

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