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A Geosolar cycle is a repetitive interaction between earth and the sun. It may refer to:

• Solar activity and climate, variability in solar output
• Solar cycle, an 11-year cycle of sunspot and energy output
• Axial precession (Lunisolar precession), a 21,000 year cycle in the orientation of earth relative to the sun
• Precession of the ecliptic, a 41,000 year cycle in axial precession
• Milankovitch cycles, a roughly 100,000 year cycle in the Earth's climate

• Disambiguation pages