C4 – Hubble Caldwell 4, Iris Nebula
Also called the Iris Nebula, or NGC 7023, Caldwell 4 is of particular interest to astronomers.
Image Credit: NASA & ESA
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https://science.nasa.gov/image-detail/c4/
Image CreditNASA & ESA
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