spiral galaxy
noun
: a galaxy exhibiting a central nucleus or barred structure from which extend curved arms of higher luminosity
called also spiral nebula
Examples of spiral galaxy in a Sentence
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Discovery of an ultra-massive grand-design spiral galaxy at z ∼ 5.2
National Radio Astronomy Observatory.
—
Paul Smaglik, Discover Magazine, 16 Apr. 2025
The galaxy's rotation curve, an important characteristic of spiral galaxies, shows a pattern typical of flat rotation curves seen in mature galaxies.
—Larissa G. Capella, Space.com, 4 Apr. 2025
Built from Hubble Space Telescope images, the full portrait offers an unprecedented view that could transform our understanding of how spiral galaxies form and evolve.
—Sharmila Kuthunur, Space.com, 24 Apr. 2025
The anniversary image was stitched together from various Hubble observations and produced using new processing techniques which better highlight Messier 104's unique structure—sporting features of both elliptical and spiral galaxies.
—Thomas G. Moukawsher, MSNBC Newsweek, 17 Apr. 2025
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Paul Smaglik, Discover Magazine, 16 Apr. 2025
The galaxy's rotation curve, an important characteristic of spiral galaxies, shows a pattern typical of flat rotation curves seen in mature galaxies.
—Larissa G. Capella, Space.com, 4 Apr. 2025
Built from Hubble Space Telescope images, the full portrait offers an unprecedented view that could transform our understanding of how spiral galaxies form and evolve.
—Sharmila Kuthunur, Space.com, 24 Apr. 2025
The anniversary image was stitched together from various Hubble observations and produced using new processing techniques which better highlight Messier 104's unique structure—sporting features of both elliptical and spiral galaxies.
—Thomas G. Moukawsher, MSNBC Newsweek, 17 Apr. 2025
See All Example Sentences for spiral galaxy
Cite this Entry
“Spiral galaxy.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/spiral%20galaxy. Accessed 24 May. 2025.
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