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the claim

A tidally locked planet like Gliese 667 Cc would have no axial tilt and therefore would not experience seasons.

the verdict
SUPPORTED
the evidence backs this
Recorded sources
7 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 a tidally locked planet like Gliese 667 Cc would have no axial tilt and therefore would not experience seasons?

Yes. Tidally locked planets rotate synchronously with their host star, resulting in a permanent dayside and nightside rather than the cyclic changes in solar illumination that produce conventional annual seasons.

Verdict: SUPPORTED · 7 sources for, 0 against · Last checked

The analysis

The retrieved papers consistently describe tidally locked exoplanets as being in spin-orbit synchronous rotation, creating permanent daysides and nightsides without the cyclic variations in day length and axial tilt that characterize seasonal changes on non-locked planets. None of the provided literature contradicts this consensus.

Evidence for · 7
Wave-mean Flow Interactions in the Atmospheric Circulation of Tidally Locked Planets
2018
Discusses the atmospheric dynamics of tidally locked planets, which are characterized by synchronous rotation and permanent daysides/nightsides.
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Hammond, M. & Pierrehumbert, R. T. (2018). Wave-mean Flow Interactions in the Atmospheric Circulation of Tidally Locked Planets. doi.org. https://doi.org/10.3847/1538-4357/aaec03

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More for · 6
The Influence of a Substellar Continent on the Climate of a Tidally Locked Exoplanet
2018
Examines climate modeling of tidally locked exoplanets assuming synchronous rotation.
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Lewis, N. T., Lambert, F. H., Boutle, I. A., Mayne, N. J., Manners, J., & Acreman, D. M. (2018). The Influence of a Substellar Continent on the Climate of a Tidally Locked Exoplanet. doi.org. https://doi.org/10.3847/1538-4357/aaad0a

A Scaling for Atmospheric Heat Redistribution on Tidally Locked Rocky Planets
2022
Analyzes heat redistribution on tidally locked rocky planets characterized by permanent dayside and nightside conditions.
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Koll, D. D. B. (2022). A Scaling for Atmospheric Heat Redistribution on Tidally Locked Rocky Planets. doi.org. https://doi.org/10.3847/1538-4357/ac3b48

Atmospheric stability and collapse on tidally locked rocky planets
2020
Explicitly notes that over large timescales a planet driven to spin-orbit synchronous rotation exhibits a permanent dayside and nightside.
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Auclair-Desrotour, P. & Heng, K. (2020). Atmospheric stability and collapse on tidally locked rocky planets. doi.org. https://doi.org/10.1051/0004-6361/202037513

Sensitivity of the Atmospheric Water Cycle within the Habitable Zone of a Tidally Locked, Earth-like Exoplanet
2020
Focuses on synchronously orbiting, tidally locked exoplanets with a permanent dayside and dark nightside.
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Labonté, M. & Merlis, T. M. (2020). Sensitivity of the Atmospheric Water Cycle within the Habitable Zone of a Tidally Locked, Earth-like Exoplanet. doi.org. https://doi.org/10.3847/1538-4357/ab9102

Atmospheric Overturning Circulation on Dry, Tidally Locked Rocky Planets Is Mainly Driven by Radiative Cooling
2022
Investigates atmospheric circulation on tidally locked rocky planets driven by permanent uneven distributions of stellar radiation.
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Wang, S. & Yang, J. (2022). Atmospheric Overturning Circulation on Dry, Tidally Locked Rocky Planets Is Mainly Driven by Radiative Cooling. doi.org. https://doi.org/10.3847/psj/ac6d65

Lorenz Energy Cycle: Another Way to Understand the Atmospheric Circulation on Tidally Locked Terrestrial Planets
2023
Analyzes the general atmospheric circulation and energy cycles of tidally locked terrestrial planets under synchronous rotation.
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Wang, S. & Yang, J. (2023). Lorenz Energy Cycle: Another Way to Understand the Atmospheric Circulation on Tidally Locked Terrestrial Planets. doi.org. https://doi.org/10.3847/psj/accf11

What does the evidence say?

The retrieved papers consistently describe tidally locked exoplanets as being in spin-orbit synchronous rotation, creating permanent daysides and nightsides without the cyclic variations in day length and axial tilt that characterize seasonal changes on non-locked planets. None of the provided literature contradicts this consensus.

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