Astronomical Grand Cycles

 

Astronomical Grand Cycles

Why In News:

Recent studies on Astronomical Grand Cycle (AGC), that recur every 2.4 million years shows fascinating observations about its impact.

About:

·       The concept of the Astronomical Grand Cycle (AGC) suggests that the gravitational interaction between Earth and Mars cyclically influences deep ocean currents, leading to recurring patterns every 2.4 million years.

·       These cycles are known as Astronomical Grand Cycles, and the geological record is an unlikely place to find evidence for such cycles.

·       This cycle is attributed to the interference of gravity fields between the two planets, causing a resonance that affects Earth’s orbit around the Sun.

·       The mechanism proposed for AGC highlights the gravitational interplay between Earth and Mars as the primary driver. Unlike the Milankovitch cycles, which are associated with Earth’s interactions with Jupiter and Saturn and coincide with the glacial and interglacial periods on Earth, the AGC specifically pertains to the interaction between Earth and Mars and its impact on deep ocean currents.


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