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Definitions

spiral galaxy

NOUN
a galaxy in spiral structure
Synonyms
WEAK
barred spiral galaxy spiral spiral nebula

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

J0107a is the earliest and most massive barred spiral galaxy known to date, making it the best target for studying the evolution of barred spiral galaxies in the early Universe.

From Space Scoop • Jun. 5, 2025

Our solar system is nestled on the third arm of the Milky Way, a spiral galaxy that is, yes, average: just one among 2 trillion galaxies in the universe.

From Slate • Feb. 7, 2025

Interstellar gas and dust coalesce in the rotation of a spiral galaxy, promoting star formation along its arms.

From New York Times • May 23, 2024

At more than 12 billion years old, BRI 1335-0417 is the oldest and furthest known spiral galaxy in our universe.

From Science Daily • Dec. 21, 2023

From our galaxy to the nearest spiral galaxy, M31, also in the constellation Andromeda, is 2,000,000 light-years.

From "Cosmos" by Carl Sagan