When is the Sun closest to the Earth and when is the Earth closest to the Sun?

It's not that the sun is closest to the earth, but that the earth should be closest to the sun! You made the mistake of geocentrism!

The Earth revolves and rotates around the Sun in a non-circular elliptical orbit, and when the revolution point is at the closest point of the ellipse, it is closest to the Sun at this time.

Since this is an elliptical trajectory, it is easy to form near and far centrics.

The Earth's orbit around the Sun is an ellipse, and the Sun is located at one of the focal points of the ellipse, so the Earth will move to the closest position to the Sun at some point in the year, which is called the Earth's perihelion. As it stands, the Earth orbits to perihelion around January 3 each year, when the distance between the Sun and the Earth is about 100 million kilometers (the average distance is 100 million kilometers). In addition, the Earth orbits to aphelion around July 4 every year, when the distance between the Sun and the Earth is about 100 million kilometers.

Although the perihelion and aphelion of the Earth can differ by up to 5 million kilometers (compared to the average distance between the Earth and the Moon of 380,000 kilometers), the distance between the Earth and the Sun has a very limited impact on the Earth's climate, and what really affects this is the tilt of the Earth's axis of rotation. Because the Earth's axis is tilted by about degrees, the area where the Sun directly hits the Earth changes back and forth between the north and south latitudes as the Earth rotates, which is the real cause of seasonal changes. In short, the Earth's orbit to perihelion or aphelion has nothing to do with the Earth falling on the summer or winter solstice.

However, the distance of the Earth from the Sun affects the length of the season. The Earth's revolution is fastest when it travels near perihelion, which is the winter in the Northern Hemisphere, so the winter in the Northern Hemisphere will be shorter than the winter in the Southern Hemisphere. By the same token, summers in the Northern Hemisphere are longer than summers in the Southern Hemisphere.

In addition, due to gravitational perturbation, the Earth's orbit around the Sun does not coincide from year to year, which means that the Earth's perihelion is not fixed, a phenomenon known as perihelion precession. It is estimated that the Earth's perihelion moves about 11 arc seconds per year, or about one week in 10,000 years. At present, the perihelion time of the Earth is gradually moving away from the winter solstice, gradually approaching the summer solstice, and then gradually approaching the winter solstice.

The average distance between the Sun and the Earth (called 1 astronomical unit) is meters (roughly 150 million kilometers), and the distance between the Earth and the Sun around the summer solstice in the Northern Hemisphere is meters, or 152 million kilometers. The Earth passes perihelion around the time of the winter solstice in the Northern Hemisphere, when it is at a distance of 147 million kilometers from the Sun in meters. The difference between aphelion and perihelion is 5 million kilometers.

At the beginning of January every year, on January 22, the Earth is closest to the Earth (perihelion), when the Earth moves very fast.

Throughout the year, the Earth has perihelion in winter and aphelion in summer. In most parts of the globe in one day, most seasons, the sun is closest to the ground at noon.

The closest time of the day the Earth is to the Sun is 12 noon, and the farthest time is in the early morning. The closest time of the year the Earth is to the Sun is January, and the farthest is July.

1. The closest time of the day to the sun is 12 noon, and the farthest time is early in the morning.

The Earth's rotation from west to east produces a day-night alternation, which is closer to the Sun when it is daytime and farther away from the Sun when it is night. But the change in distance is minimal. Because the earth is rotating and revolving at the same time.

If the Earth is completely stationary, the area in the middle hour is closer to the Sun than the area in the morning hour.

However, the earth is not completely stationary, but is in a constant rotation and revolution, so the distance of the sun from the observer is related to the shape of the earth, the latitude of the earth, the time of sunrise, the slow change of the direction of the earth's axis of rotation and the influence of the gravitational force of the planets on the earth's orbit, but the change in this distance is much smaller than the straight-line distance of the sun and the earth, and the impact is minimal.

2. The closest time of the year to the Sun is January, and the farthest is July.

The Earth's orbit around the Sun is roughly an ellipse, and its long and short diameters are not much different. The sun is at one of the focal points of this ellipse, and the focus is not in the center of the ellipse, so the distance between the earth and the sun is sometimes a little closer, sometimes a little farther away. When you are closest to the Sun, this point is called perihelion.

The farthest point from the Sun is called the aphelion.

At the beginning of January, the Earth is closest to the Sun, 100 million kilometers, which is called perihelion. At the beginning of July, the farthest point of the Earth from the Sun, which is 100 million kilometers, is called aphelion.

During the day, at 12 noon, the Sun is close to the Earth.

Of the year, the sun is closest to the earth on the summer solstice, and the sun is furthest from the earth on the winter solstice.

Introduction: Sun-Earth distance is also known as solar distance. Refers to the length of the straight line from heliocentric to geocentric.

Since the Earth's orbit around the Sun is an ellipse and the Sun is at a focal point, this distance varies. Its maximum is 152.1 million km (the Earth is at aphelion); The minimum is 147.1 million km (the Earth is at perihelion); The average is 149.6 million kilometres; This is an astronomical unit, which was established by the International Astronomical Union in 1976 as 149597870 kilometers and has been in use since 1984. At this distance, it takes only 8 minutes and 18 seconds for sunlight to reach the Earth's surface.

One light-year is equal to 63,240 astronomical units. One light-year is equal to 9,460,730,472,580,800 meters (exactly), or approximately equal to meters = patameters. Light travels about 300,000 kilometers per second, 18 million kilometers per minute, and 8 light minutes is about a light year, and 18 light seconds is about a light year.

Light-year is a unit that measures the space-time distance between celestial bodies, and is generally used to measure the space-time distance between celestial bodies, which literally refers to the distance of light traveling in a straight line in the cosmic vacuum for one year, which is 9 460 730 472 kilometers, which is calculated from time and the speed of light.

When you are closest to the Sun, this point is called perihelion. Perihelion is around the winter solstice, and aphelion is around the summer solstice.

On the vernal equinox, the Earth is the closest to the Sun, on the autumnal equinox, and on the summer and winter solstices, the Earth is as far away from the Sun, between perihelion and aphelion.

At the beginning of January, the Earth was 147,100,000 kilometers closer to the Sun, which is called perihelion. At the beginning of July, the Earth is farthest from the Sun, at 152,100,000 km, which is called aphelion.

The Earth orbits in an elliptical orbit around the Sun, so there will be aphelion and perihelion, with perihelion being closest to the Sun and aphelion being the farthest from the Sun. Perihelion is at the beginning of January each year, while aphelion is at the beginning of July every year.

Although the Earth's right distance from the Sun brings the Earth a suitable temperature, on this basis, the Earth's periheliodate and perihelia have little to do with the temperature, and the temperature mainly depends on the distance and altitude from the direct point of the Sun.

When the Earth is at perihelion (early January), the Earth is closest to the Sun, and the Sun shines directly in the Southern Hemisphere, which receives more solar radiation than the Northern Hemisphere, so the Southern Hemisphere is the summer half year, and the Northern Hemisphere is the winter half year, and the temperature is lower than that of the slippery fiber.

The average distance between the Earth and the Sun is 149.6 million kilometers. Although there is a difference in the distance between the sun and the earth in the morning and at noon, the difference is negligible in relation to the distance between the earth and the sun, and does not produce a change in the size of the sun or the heat or cold that we perceive.

throughout the day. The sun is the same distance from the earth. Since it's the same.

Why is it hot at noon?..That's because of the angle at which the sun hits the ground. The greater the angle.

The higher the temperature. Similarly. Is the Sun closer to Earth in winter or summer in the Northern Hemisphere? Answer: Winter. Why. Because the Earth's orbit is only elliptical.

In winter. The Earth is closest to the Sun. So why is it colder in winter?That's because the sun shines directly on the Tropic of Capricorn in winter.

The angle of irradiation of the Tropic of Cancer becomes a degree. So in the winter you will feel that the temperature is lower. But in reality, the sun is relatively close to the earth. Contrarily.

In summer, the sun shines directly on the Tropic of Capricorn.

The irradiation angle is about 90 degrees. So you're going to feel hot.

Reference: Earth Sciences.

My department returned to the afternoon school both.

When I go back to school in the summer, it's so hot.

It should be the hottest in the summer from 1 to 2 o'clock.

The closest time of day for the Sun to Earth is noon in "local" time....The closest time of year for the Sun to Earth is the "local" summer....And the equator is the closest place to the Sun on Earth....**Reference:Filled with deep respect.