The Noah Project

Rebuilding a sustainable world.

Earth Reaches Perihelion on January 4th

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Earth, as seen by Apollo 8.

On Jan. 4 at 8:00 a.m. EST (12:00 GMT), Earth reached its perihelion for 2014. The perihelion of a planet’s orbit occurs when the planet is at its least distance from its star during a particular orbital cycle.

The perihelion date varies between Jan. 1 and Jan. 5, while the aphelion date varies between July 2 and July 6.

The times of the perihelion and aphelion clearly show that Earth’s seasons are primarily dependent on the tilt of the Earth’s rotational axis, not its distance from the Sun. While there is a significant difference in radiant heat, the incident angle of sunlight upon the planet is far more significant. Another important factor is the larger land area in the Northern Hemisphere compared to the larger ocean area in the Southern Hemisphere, leading the Northern Hemisphere to warm more easily.

You can find more information about the perihelion here.

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Author: Daniela

I was born in Croatia, at that time Yugoslavia. My family moved to the US when I was very young, but I still treasure the memories of my grandfather teaching me how to protect myself against the "evil eye," my grandmother shopping early every morning, at the open air market, to buy the freshest vegetables for the day's meals, and the traditions that were the underpinnings of our society. Someone once noted that "For all of us that want to move forward, there are a very few that want to keep the old methods of production, traditions and crafts alive." I am a fellow traveler with those who value the old traditions and folk wisdom. I believe the knowledge they possess can contribute significantly to our efforts to build a more sustainable world; one that values the individual over the corporation, conservation over growth and happiness over wealth.

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