Celestial Objects

Caldwell 23

Galaxies

Citation Formats

General Reference

Space and Astronomy Atlas. "Caldwell 23." Accessed September 2, 2026. https://space.interactiveatlas.org/celestial-objects/caldwell-23.

APA Style

Space and Astronomy Atlas. (n.d.). Caldwell 23. Retrieved September 2, 2026, from https://space.interactiveatlas.org/celestial-objects/caldwell-23

BibTeX

@misc{spaceandastronomyatlas-caldwell-23,
  author = {Space and Astronomy Atlas},
  title = {Caldwell 23},
  year = {2026},
  url = {https://space.interactiveatlas.org/celestial-objects/caldwell-23},
  note = {Accessed September 2, 2026}
}

Caldwell 23, also known as NGC 891, is a spiral galaxy in the constellation Andromeda seen almost exactly edge-on, discovered by William Herschel in 1784. It lies roughly 30 million light-years from Earth and is bisected by a prominent, dark dust lane running the length of its disk, often compared in structure and size to the Milky Way.

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