During Which Month Is The Earth Closest To The Sun Link [portable] • Trending & Proven

While the difference in distance between perihelion and aphelion is only about , it still has minor impacts on our seasons:

To visually understand how Earth's elliptical path places it closest to the sun in January and farthest in July, consider the orbital diagram below. Note that the eccentricity of the ellipse is visually exaggerated here to clearly show the difference between the two points: Exact Dates of Perihelion and Aphelion

Interestingly, this 3% difference in distance does affect the amount of solar radiation Earth receives. During perihelion (January), Earth receives about than it does during aphelion (July).

"In space terms, it’s a pebble's throw," Elias laughed. "But here is the key: Earth’s axis is tilted at 23.5 degrees. Because of that tilt, right now, the Northern Hemisphere is leaning away from the Sun. Even though the Sun is physically closer to Earth, its rays are hitting us at a low, glancing angle. They are spread out over a wider area, and they have to pass through more atmosphere to get to us." during which month is the earth closest to the sun link

To understand why this happens, how it affects our planet, and why it does not cause global summertime in January, we must explore the geometry of Earth's orbit. The Science of the Ellipse: What is Perihelion?

When a planet is at its point to the Sun, it is called perihelion (from the Greek words peri , meaning "near," and helios , meaning "Sun"). Conversely, the point at which it is farthest from the Sun is called aphelion .

The reason for the seasons isn’t our from the Sun; it’s the tilt of the Earth’s axis. In January, the Northern Hemisphere is tilted away from the Sun. Even though we are physically closer to the solar surface, the sun’s rays hit the northern half of the planet at a shallow angle, spreading the heat thin and resulting in shorter, colder days. While the difference in distance between perihelion and

You can also search for "Earth perihelion date" on NASA's main site or any reputable astronomy education page for confirmation.

This annual astronomical event is called . During this time, Earth is approximately 147 million kilometres (91.4 million miles) from the sun, which is about 5 million kilometres (3 million miles) closer than it is at its farthest point in July. Why Perihelion Occurs

The reason the Earth-sun distance changes at all lies in the shape of Earth's orbit. For centuries, it was believed that the planets moved in perfect circles. However, in the early 17th century, astronomer Johannes Kepler discovered that planetary orbits are actually elliptical, or oval-shaped. "In space terms, it’s a pebble's throw," Elias laughed

A common misconception is that seasons are caused by Earth’s distance from the sun. If that were true, the entire planet would experience summer in January.

When you’re shivering in the middle of winter, the last thing you’d probably guess is that you are physically closer to the Sun than at any other time of year. It feels like a cosmic prank, but it’s a fundamental fact of our orbit.

The extra energy received at perihelion makes Northern Hemisphere winters slightly warmer than they would be otherwise, and Southern Hemisphere summers somewhat more intense. The reverse happens at aphelion, where the Northern Hemisphere summer is slightly moderated by the planet's farther distance from the Sun.

The timing of perihelion is not static over very long periods. Due to a slow, continuous change in the orientation of Earth's elliptical orbit—a phenomenon known as apsidal precession —the date of perihelion shifts gradually over a cycle of about 21,000 years. Approximately 10,000 years from now, the perihelion will occur in July, meaning the Northern Hemisphere's summers will be hotter and its winters colder, due to the combined effect of axial tilt and proximity to the Sun.

To learn more about how orbital mechanics shape planetary climates, check out this guide on the Earth's orbit and its seasonal impacts.