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Keyword: redrectanglenebula

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  • Astronomy Picture of the Day -- The Red Rectangle Nebula from Hubble

    05/21/2013 3:39:45 AM PDT · by SunkenCiv · 6 replies
    NASA ^ | May 21, 2013 | (see photo credit)
    Explanation: How was the unusual Red Rectangle nebula created? At the nebula's center is an aging binary star system that surely powers the nebula but does not, as yet, explain its colors. The unusual shape of the Red Rectangle is likely due to a thick dust torus which pinches the otherwise spherical outflow into tip-touching cone shapes. Because we view the torus edge-on, the boundary edges of the cone shapes seem to form an X. The distinct rungs suggest the outflow occurs in fits and starts. The unusual colors of the nebula are less well understood, however, and speculation holds...