Why is the Earth s orbit around the Sun elliptical and not circular?

Because the gravitational attraction of the planet is related to the vector and is inversely proportional to the square side, and the massive object can easily distort the surrounding objects, the orbit of the sun is elliptical.

This is actually a very interesting example of gravitational force, although the earth revolves around the sun, it is not only affected by the sun's force, the nearby planets and the moon give the earth force, so it is elliptical.

I think it may have something to do with the reference to the sun itself. Because of gravity, all planets move to the second of their power, and the shape they take is an ellipse.

If it is round, the life of the earth is much longer.

No. The Earth revolves around the Sun.

The orbit is not a perfect circle, it is an oval.

The Earth's orbit around the Sun is very close to a perfect circle ellipse like a jujube, and the eccentricity of the orbit.

Only. When the Earth is furthest from the Sun (aphelion, the distance is 152,097, 1,000 oak acres; The closest distance (near the Münsen point) is 147,098 km, a difference of less than 5 million km. The orbit has a half-long diameter of 149,597,870 km.

Earth's orbit.

1 The elliptical orbit is a compromise between the Earth's gravitational pull on nearby celestial bodies. During the formation of the early solar system, the original planets were impacted by asteroids and a series of other disturbances, which led to the formation of elliptical orbits. This is called the planetary migration theory.

From the encyclopedia: "The Earth revolves around the Sun").

2 The orbit of the earth is indeed elliptical, but this ellipse is approximately circular, and the sun is located on a focal point of this ellipse, so that the earth is not at the same distance from the sun when it revolves, about the perihelion of about January, and at the aphelion of about July, because this ellipse is approximately circular, so the distance between perihelion and aphelion is not much different, and this difference is very small relative to the distance between the sun and the earth, which can be ignored (from knowing: the orbit of the earth around the sun is not elliptical).

Let's analyze whether this conclusion is correct or very wrong from another aspect.

Every day, we can experience the sun rising in the east and setting in the west, and experience the four distinct changes of spring, summer, autumn and winter.

It seems that the climate has not changed much, which proves that the distance between the sun and the earth is kept at an equal distance, and their radius is the same. There will be no different radii.

Then the distance between the earth and the sun is the same, and it is a perfect circle and not an ellipse.

If the Earth and the Sun have two radii, there will be extremely cold and extremely hot weather because the two radii receive different heat from the Sun.

This phenomenon occurs on Earth, but we don't feel it.

Some people will immediately ask, isn't there a change of four seasons in spring, summer, autumn and winter?

The four seasons are not caused by the distance between the earth and the sun, but by the angle between the axis of the center of the earth and the sun's rays.

We only need to see that the Earth's equatorial climate remains the same, and that the radius of the Earth and the Sun is always at an equal distance.

This is very different from the distance from the sun received by two radius ovals.

When the Sun and the Earth are in an elliptical radius, the African continent becomes Antarctica, and even colder.

When the Earth moves to a small radius closest to the Sun, Antarctica becomes a hot furnace.

Glaciers are melting, and the Earth's sea level is rising, inundating many low-altitude areas.