The Hubble Telescope finds a complex lump of gas that extends i


    NGC 6891 shines brightly in new images from the Hubble Space Telescope. This is because the observatory allows scientists to learn more about how these gas clouds form and evolve.

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    Astronomers refer to NGC 6891 as the "planetary nebula," a term that stems from the misidentification of planets back in the days when telescope technology was still in its infancy.

    Today we know that the nebula formed after a small star. releases gas late in life
    High resolution images of the Hubble Space Telescope reveal knots and filaments wrapped around a white dwarf star buried deep within the cloud.

    The data also show that the outer radius of the gas expands faster than the innermost part of the nebula. And the observations also captured shells of gases in different directions.

    From their movement Astronomers estimate that one of the shells is 4,800 years old, while the outer radius is about 28,000 years, indicating a dying star eruption at different times,” NASA officials wrote in a statement.

    The glow from NGC 6891 occurs when a white dwarf ionizes or removes electrons from the surrounding hydrogen gas.