When will the eight planets be in a line

Here, the contemptible people rely on their shallow astronomical knowledge to calculate it again (talking about the head shadow of the planet on the ecliptic plane, you can ignore the inclination of the planet's orbit, otherwise the first and second floors have been said, it is impossible).

Let's start with a concept – the round cycle.

The cycle (simplified) is the time between two planets being in the same position for the Sun. Because the contemptible ability to express itself is not good, it may be very mysterious. To put it bluntly, for example, today Mercury, Venus, and the sun umbrella are in a straight line, and after a round cycle, the three of them are in the same straight line, and in this cycle, there is no situation where the three are in the same line again.

If the landlord learns simple physics, it is not difficult to come up with the following formula.

1 Cycle Period = 1 Rotation Period for a Small Celestial Body - 1 Rotation Period for a Large Celestial Body.

This makes it easy to solve the problem. Suppose that all 8 planets are in the same line on a day.

Remove the least common multiple to get a good number (15 digits) year.

And after so much time, the planets are not necessarily in the same straight line, because the orbits of the planets are not perfectly circular but elliptical, and the angular velocity of the revolution is different at different times. Therefore, after such a long time, these 8 planets may not be photographed on the same straight line.

Therefore, the contemptible question is that the time difference between the eight major planets and the same line is extremely long, far exceeding the existing lifespan of the universe. As for the 6,000 times mentioned upstairs, he said that the nineteen stars align the celestial phenomenon, which means that the angle between the nine planets and the line of the sun is below 90 degrees (slightly more than 90 degrees is fine), it can be seen that the conditions have been relaxed so much that it will take 6000 years to do so. How long would it take if it was strictly in a straight line!

Never, because the orbits of all eight planets are irrational numbers that are not divisible from each other. Therefore, it can never be arranged in a straight line. Don't say that all eight planets, even more than three of them, can never be aligned in a straight line.

Generally speaking, the nine-star alignment actually refers to the "nine-star convergence", that is, several major planets are gathered in a relatively small area from the earth, and the angle between them is relatively small. How can this "small" have dozens of degrees, sometimes even forty or fifty degrees. Therefore, the so-called nine-star alignment or eight-star alignment is not "lined up in a straight line" at all.

This phenomenon does not occur at all. There are eight-star beads, and they used to be nine-star beads. However, the eight-star alignment is not that the eight planets are lined up in a line, it means that in a period of time, the eight planets will meet in a 96-degree fan. In addition, there is also the "five-star bead".

The next time the Eight Stars align is on December 6, 2149. The last time was on March 10, 1982, and the next time will be after the 24th century. Alack! If you see the nine-star bead once, you have no regrets in this life!

Never. The reason is simple. The orbits of the planets are not on the same plane, so they will never line up in a straight line. But it is still possible to line up in a straight line on the projection.

I don't know. This is just a foreknowledge, and it is impossible to say whether this is possible.

As of March 29, 2021, there are eight planets, and they are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune in descending order from near to far.

On the afternoon of August 24, 2006, at the 26th session of the International Astronomical Union, Resolution 5 was adopted, and astronomers voted to officially classify Pluto as a "dwarf planet" and remove it from the list of "planets". Most of the eight planets also rotate in the same direction as their orbit. There are only two exceptions: Venus and Uranus.

Venus rotates in the opposite direction to its revolution. Uranus, on the other hand, "rolls" in orbit.

As of March 29, 2021, there are eight planets, in order of distance from the Sun, they are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

On the afternoon of August 24, 2006, at the 26th session of the International Astronomical Union, Resolution 5 was adopted, and astronomers voted to officially classify Pluto as a "dwarf planet" and remove it from the list of "planets". Most of the eight planets also rotate in the same direction as their orbit. There are only two exceptions: Venus and Uranus.

Venus rotates in the opposite direction. Uranus, on the other hand, "rolls" in orbit.

1. Mercury: Mercury

Mercury (Latin: Mercurius) is the innermost and smallest of the eight planets in the solar system, and the closest planet to the Sun.

The Chinese excavated site, known as Chenxing, has the largest orbital eccentricity of the eight planets. It orbits the Sun once every Earth day, and it also rotates three times per revolution.

2. Venus: Venus

Venus is one of the eight planets in the solar system, and is the second planet in order of closest to the sun. It is the closest planet to Earth (Mars is sometimes closer).

3. Earth: Sullen hail

Earth is one of the eight planets in the solar system, the third planet in order from near to far, and it is also the terrestrial planet with the largest diameter, mass and density in the solar system, 100 million kilometers away from the sun. The Earth rotates from west to east while revolving around the Sun.

4. Mars: Mars

Mars (Mars) is one of the eight planets in the solar system, the fourth planet in the solar system from the inside to the outside, belonging to terrestrial planets, with a diameter of about 53% of the Earth and a mass of 11% of the Earth. The inclination angle of the axis of rotation and the rotation period are similar to those of the earth, and one revolution is about twice the time of the earth's revolution.

5. Jupiter: Jupiter

Jupiter is the largest and fastest rotating planet among the eight planets in the solar system, the fifth planet from the inside out. It has a mass of one-thousandth the mass of the Sun and a mass of the other seven planets in the Solar System combined.

6. Saturn: Saturn

Saturn (English saturn, Latin saturnus) is one of the eight planets in the solar system, and the 6th closest distance from the sun (from near to far). It is second only to Jupiter in mass and diameter, and belongs to the same gas giant as Jupiter. In ancient Europe (ancient Greece), Saturn was called Cronus (Cronian), and in ancient China, it was also called Zhenxing or Filling.

7. Uranus: Uranus

Uranus is the seventh planet (astronomical unit) in the solar system from the inside out, the third largest planet in the solar system (larger than Neptune) and the fourth most massive (smaller than Neptune), lying almost horizontally orbiting the Sun.

8. Neptune: Neptune

Neptune is the far-reaching planet of the eight planets, and Neptune is the eighth planet in order of the planet's distance from the Sun, the fourth largest planet in diameter and the third largest planet in mass.

Venus, Saturn, Jupiter, Mercury, Earth, Mars, Uranus, Neptune

The eight planets refer to the eight large planets of the solar system, according to the distance from the sun, they are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. Most of the eight planets also rotate in the same direction as their orbit. There are only two exceptions: Venus and Uranus.

Venus rotates in the opposite direction to its orbit, while Uranus is at an angle of 97° to its orbit"Lie down"Revolve.

Definition of planets: first, celestial bodies that must orbit stars; Second, the mass is large enough to rely on its own gravity to make the celestial body spherical; The third is that there should be no other objects in the vicinity of this orbit (clean up other objects in its orbit). According to this division, there are only eight planets in the solar system: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

1. English name of Mercury: mercury

2, Venus English name: Venus

3. The English name of the earth: earth

4. Mars English name: mars

5. Jupiter's English name: Jupiter

6, Saturn's English name: Saturn

7. Uranus English name: Uranus

8, Neptune English name: neptune

According to the current observations, there are a total of eight planets in the solar system, in order from the near finger to the distance from the sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune.

Solar system.