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Main » 2013 » August » 14 » HElix nebula
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HElix nebula

Helix Nebula
Eye of God

Spitzer Helix Nebula
Spitzer Helix Nebula
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SSC2007-03 - Dust makes this cosmic eye look red. The eerie Spitzer Space Telescope image shows infraredradiation from the well-studied Helix Nebula (NGC 7293) 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. But the Spitzer data show the nebula's central star itself is immersed in a surprisingly bright infrared glow. Models suggest the glow is produced by a dust debris disk. Even though the nebular material was ejected from the star many thousands of years ago, the close-in dust could be generated by collisions in a reservoir of objects analogous to our own solar system's Kuiper Belt or cometary Oort cloud. Formed in the distant planetary system, the comet-like bodies would have otherwise survived even the dramatic late stages of the star's evolution.

NASAJPL-Caltech, Kate Su (Steward Obs, U. Arizona) et al.

Text: APOD

See Hubble's Helix Nebula, also known as the Eye of God.

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