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Keyword: ngc7293helixnebula

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  • Astronomy Picture of the Day - NGC 7293: The Helix Nebula

    10/14/2021 4:06:13 PM PDT · by MtnClimber · 16 replies
    APOD.NASA.gov ^ | 14 Oct, 2021 | Image Credit & Copyright: Ignacio Diaz Bobillo
    Explanation: A mere seven hundred light years from Earth, toward the constellation Aquarius, a sun-like star is dying. Its last few thousand years have produced the Helix Nebula (NGC 7293), a well studied and nearby example of a Planetary Nebula, typical of this final phase of stellar evolution. A total of 90 hours of exposure time have gone in to creating this expansive view of the nebula. Combining narrow band image data from emission lines of hydrogen atoms in red and oxygen atoms in blue-green hues, it shows remarkable details of the Helix's brighter inner region about 3 light-years across....