Tue Oct 07 12:11:46 UTC 2025: Okay, here’s a news article summarizing the provided text about Milankovitch Cycles, formatted for The Hindu, along with a brief context of other content being published that day:

**News Article:**

**Orbital Shifts: Milankovitch Cycles and Their Role in Earth’s Climate**

**Published:** October 07, 2025 05:41 pm IST
**By:** *The Hindu Science Desk*

**Chennai, India** – While human activity is widely recognized as a major driver of contemporary climate change, natural factors also play a significant role. A recent article in *The Hindu’s* “Science For All” newsletter delves into one such natural influence: Milankovitch Cycles.

These cycles, first defined by Serbian astronomer Milutin Milankovitch in the 1920s, describe the cyclical variations in Earth’s orbit around the sun, its axial tilt (obliquity), and its wobble on its axis (precession). These subtle changes affect the distribution of solar radiation across the planet, impacting long-term climate patterns.

The article highlights the three key elements of Milankovitch Cycles:

* **Eccentricity:** The shape of Earth’s orbit, which varies from nearly circular to slightly elliptical, influencing the length of seasons.
* **Obliquity:** The tilt of Earth’s axis, responsible for the existence and intensity of seasons. Greater tilt equates to more extreme seasonal variations.
* **Precession:** The “wobble” of Earth on its axis, caused by gravitational forces from the sun and moon, impacting the timing and intensity of seasonal changes across different regions.

The piece connects these cycles to historical climate events, most notably the ice ages. Milankovitch theorized that these orbital shifts are key triggers for the onset of glacial periods, estimating their recurrence approximately every 41,000 years. However, the article notes a discrepancy, with the cycle time increasing to 100,000 years approximately 800,000 years ago, a phenomenon that remains unexplained.

The “Science For All” newsletter aims to demystify complex scientific concepts for a general audience.

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