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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In a spiral galaxy like our Milky Way, the galactic core contains more stars and hence gravity than the outer arms do.
—
Rebecca Boyle, Scientific American, 12 June 2025
Martin was able to bring out exquisite detail in the grand spiral galaxy by executing a set of 18 separate 300 second exposures, which were then stacked and post-processed using PixInsight astrophotography software.
—Anthony Wood, Space.com, 30 Apr. 2025
It's been textbook knowledge for over a century that our Milky Way galaxy is doomed to collide with another large spiral galaxy, Andromeda, in the next 5 billion years and merge into one even bigger galaxy.
—Jennifer Ouellette, ArsTechnica, 3 June 2025
The spiral galaxy is home to Earth and hundreds of billions of stars spanning more than 100,000 light-years, NASA said.
—Hannah Poukish, Sacbee.com, 19 May 2025
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Rebecca Boyle, Scientific American, 12 June 2025
Martin was able to bring out exquisite detail in the grand spiral galaxy by executing a set of 18 separate 300 second exposures, which were then stacked and post-processed using PixInsight astrophotography software.
—Anthony Wood, Space.com, 30 Apr. 2025
It's been textbook knowledge for over a century that our Milky Way galaxy is doomed to collide with another large spiral galaxy, Andromeda, in the next 5 billion years and merge into one even bigger galaxy.
—Jennifer Ouellette, ArsTechnica, 3 June 2025
The spiral galaxy is home to Earth and hundreds of billions of stars spanning more than 100,000 light-years, NASA said.
—Hannah Poukish, Sacbee.com, 19 May 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 19 Jun. 2025.
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