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the claim

Spiral galaxies rotate with their arms trailing behind their direction of spin

the verdict
SUPPORTED
the evidence backs this
Recorded sources
3 sources for · 0 against

Counts group repeated records of the same source within each side. They do not measure evidence strength or source independence.

Is it true that spiral galaxies rotate with their arms trailing behind their direction of spin?

Yes. Observational studies of spiral galaxies consistently confirm that their spiral arms trail behind their overall direction of rotation.

Verdict: SUPPORTED · 3 sources for, 0 against · Last checked

The analysis

Multiple papers explicitly observe or build upon the standard astronomical finding that spiral arms in galaxies are trailing structures.

Evidence for · 3
ALMA captures feeding and feedback from the active galactic nucleus in NGC 613
2019
Observations of NGC 613 reveal a two-arm trailing nuclear spiral.
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Audibert, A., Combes, F., García-Burillo, S., Hunt, L., Eckart, A., Aalto, S., Casasola, V., Boone, F., Krips, M., Viti, S., Muller, S., Dasyra, K., Werf, P. V. D., & Martin, S. (2019). ALMA captures feeding and feedback from the active galactic nucleus in NGC 613. doi.org. https://doi.org/10.1051/0004-6361/201935845

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More for · 2
DISENTANGLING THE CIRCUMNUCLEAR ENVIRONS OF CENTAURUS A: GASEOUS SPIRAL ARMS IN A GIANT ELLIPTICAL GALAXY
2012
Observations of the giant elliptical NGC 5128 indicate that its gaseous spiral arms are trailing.
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Espada, D., Matsushita, S., Peck, A., Henkel, C., Israel, F., & Iono, D. (2012). DISENTANGLING THE CIRCUMNUCLEAR ENVIRONS OF CENTAURUS A: GASEOUS SPIRAL ARMS IN A GIANT ELLIPTICAL GALAXY. doi.org. https://doi.org/10.1088/2041-8205/756/1/L10

SIGNALS on the mixing of oxygen and nitrogen in the spiral galaxy NGC 6946
2025
Analysis of elemental abundances in NGC 6946 supports gas flow models where the trailing edge shows specific enrichment patterns relative to a rotating disk.
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Bresolin, F., Fern'andez-Arenas, D., Rousseau-Nepton, L., Garner, R., Zurita, A., Robert, C., Drissen, L., Martin, R., Amram, P., Puertas, S., Savard, G., Vicens, S., & Posternak, M. (2025). SIGNALS on the mixing of oxygen and nitrogen in the spiral galaxy NGC 6946. doi.org. https://doi.org/10.1093/mnras/staf510

What does the evidence say?

Multiple papers explicitly observe or build upon the standard astronomical finding that spiral arms in galaxies are trailing structures.

Receipt History
first checked06 Aug 2026
judged → SUPPORTED · 8406 Aug 2026
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