Can you see all the 7 planets Which of the 8 planets can be seen with the naked eye

It can only be seen with the naked eye: Mercury, Venus, Mars, Jupiter, and Saturn.

Stars emit light, planets do not emit light, it only reflects the light of the stars.

The seven planets appear smaller than the Sun, but larger than the other stars.

But the other stars are so far away that they look just as big.

Venus is usually visible in the morning before the sun rises, or in the evening after the sun sets, right?

Mercury is visible during the transit of Mercury, which is when it passes over the surface of the Sun. Theoretically, I said so, but every time I looked at it, I didn't see it, and my eyes didn't work, it was too bright.

Mars is visible, remember that the first two years were the year when Mars was relatively close to Earth, and red Mars could be seen at night throughout the summer.

Jupiter and Saturn also have to have a specific moment in their theoretical vision, right? And you have to have good character and luck!

Obviously, the only planets we can identify with the naked eye are large planets. However, not all large planets are recognizable with the naked eye. Among the nine planets, in addition to the Earth, there are six that can be identified with the naked eye, Venus, Mars, Jupiter and Saturn are often visible, Mercury and Uranus can also be seen when the observation conditions are good, and Neptune and Pluto are not visible to the naked eye anyway.

If the planets are arranged according to their volume, they are Mercury, Mars, Venus, Neptune, Uranus, Saturn, Jupiter, and if they are arranged according to the mass of the planets, they are Mercury, Mars, Venus, Uranus, Neptune, Saturn, and Jupiter.

The seven planets generally refer to the seven major planets in the solar system, if arranged according to the distance from the sun, the seven planets are Neptune, Uranus, Saturn, Jupiter, Mars, Venus, and Mercury in descending order. Most of the seven planets rotate in the same direction as their orbits, except for Venus and Uranus.

A celestial body defined as a planet generally needs to meet three conditions: first, it must be a celestial body orbiting a star, second, it must be massive enough, and third, there are generally no other objects in the vicinity of its orbit. In the solar system, according to this criterion, there are only seven planets such as Mercury, Venus, Mars, Jupiter, Saturn, Uranus, and Neptune, and in addition, the earth also belongs to the planets in the solar system, so there are a total of eight planets plus the earth.

Some of the eight planets can be seen with the naked eye. Venus, Mars, Jupiter, and Saturn are the 4 planets visible to the naked eye. The easiest planet to observe is Venus, which is also the brightest planet in the sky.

Before sunrise and within 48° of the horizon after sunset, it is 6 times brighter than Jupiter at its brightest.

There are eight planets in the solar system, from the inside to the outside, Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune. If you are in order of size: Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mars, Mercury.

Jupiter is the largest planet in the solar system, and its mass is twice the mass of the other seven planets combined.

On Earth, the solar system bodies visible to the naked eye are not only the Sun and the Moon, but also the five other planets - Mercury, Venus, Mars, Jupiter, and Saturn. The picture below is the scene of the Moon, Saturn, and Jupiter in the sky that I photographed a few days ago:

It's just that the planets themselves are not big enough and are far from the Earth, so they are not visible to the naked eye. These planets appear to be luminous bright spots as stars outside our solar system.

However, with the help of an astronomical telescope with a limit resolution exceeding that of the human eye, the surface of the five planets can be seen, and below are Jupiter and Saturn, photographed with an astronomical telescope with an aperture of 150 mm

<> in the astronomical telescope, you can see the streaks of Jupiter, and you can also see the solar eclipse phenomenon that occurs on Jupiter, known as the moon of Jupiter. Although Saturn is smaller and farther away than Jupiter, Saturn's beautiful rings are also visible under astronomical telescopes.

By the way, let's post about the moon that was photographed on the same day:

And Theophilus crater on the surface of the moon:

This is not the season to observe Mars, which is located on the solar side of the Earth's orbit and currently rises and sets at about the same time as the Sun. Mars appears to be a red bright spot because its surface is covered with iron oxide, so it appears red in appearance. The picture below is the Martian photograph taken by the author after the end of the Mars opposition last year:

Venus is the closest (average distance) planet to Earth, it is a planet within the Earth's orbit, and its size is close to that of Earth. Since the angular distance between Venus and the Sun is not large, it can only be seen before the sun rises or for a short period of time after it sets. Venus looks so bright that it is the brightest star in the night sky.

Through the astronomical telescope, you can also see that Venus, like the Moon, also has obvious phase changes, the following picture is the phenomenon of Venus's profit and loss that the author photographed last year:

Since Mercury is the closest star to the Sun, its angular distance from the Sun is very small, and it is very rare to see Mercury. To date, I have not seen Mercury. In fact, most people never see Mercury in their lifetime.

What we can't see with the naked eye are the planets of the Perioglens, Neptune and Uranus, which are the farthest planets from the Sun and the planets with the warmest temperatures and the largest temperature difference between day and night.

The only thing we can see is the Moon, and the rest of the water, gold, fire, earth, Uranus, Neptune, are all invisible to our naked eyes, and we must use astronomical tools.

Among the eight planets, there is a terrestrial star that we cannot see. The planets we can see with the naked eye are Venus, Jupiter, Mercury, Saturn, Mars, and Uranus.

In general, Uranus and Neptune are barely visible on Earth with the naked eye due to their distance. In addition, Mercury is so close to the Sun that it is obscured by the sun's rays and is generally invisible to the naked eye on Earth.

Categories: Education Kechun Zhimin >> Science and Technology.

Analysis: There are five planets that can be seen with the naked eye: Venus, Jupiter, Mercury, Mars, and Saturn. There are three planets in the solar system that are invisible to the naked eye, and they are Uranus, Neptune, and Pluto. Earth is also a planet. Collectively known as the nine planets.

The movement of planets in space has a certain law, it revolves around the earth from west to east, and most of the planets are in the same direction of rotation as the sun, which is called "isotropy". The orbits of the nine planets are almost all in the same plane (only Mercury and Pluto have a greater degree of inclination in the orbital plane), which is called "coplanarity". With the exception of Mercury and Pluto, the nine planets all orbit in a nearly elliptical shape, which is called "near-circularity".

The planet itself does not emit light, it shines by reflecting the sun's light.

From different perspectives, the nine planets are divided into different categories. Planets within and outside the Earth's orbit are called intraterrestrial planets and extraterrestrial planets, respectively. The planets inside and outside the asteroid are called inner and outer planets, respectively.

The outer planets are sometimes divided into giant planets (Jupiter and Saturn) and perihelia planets (Uranus, Neptune, Pluto).

With the exception of Pluto, the outer planets are so different from the inner planets that they are also called Jupiter and Earth-like planets, respectively.

Regarding the origin of planets, astronomers around the world have put forward dozens of different theories, which can be summarized into three main categories: one is the "separation theory", the other is the "capture theory", and the other is the "co-formation theory", which holds that the sun and the planets are formed by a "primordial nebula", the central part of which is condensed into the sun, and the surrounding part becomes planets and moons. The "co-formation theory" is currently recognized by many astronomers.

Mercury, Venus, Earth, Mars, Jupiter, Saturn, 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 rotational directions of the eight planets are also consistent with the direction of rotation. There are only two exceptions: Jin Wang Jingxing and Uranus. Venus rotates in the opposite direction to its orbit, while Uranus rotates "lying" at an angle of 97° to its orbit. Wheel tomb type.

The eight planets in the solar system are: Earth, Venus, Jupiter, Mercury, Mars, Saturn, Neptune, and Uranus. The rotation direction of the trouser wheels of the eight planets is basically the same as the direction of revolution, except for Venus and Uranus.

Venus's rotation is in the opposite direction of its orbit, while Uranus rotates at an angle of 97° to its orbit.

Definition of planets: first, celestial bodies that must orbit stars; The mass of the second canopy 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).

Earth is the third planet from the Sun and the fifth largest planet in the Solar System, and Earth is the densest planet in the Solar System. The Earth's natural satellite is the Moon, and it is the only natural satellite of the Earth.

Mercury is closest to the Sun and is the smallest planet in the solar system in terms of volume and mass. Often haunted at the same time as the sun, it was called "Chenxing" in ancient China. The temperature difference on Mercury is the largest in the entire solar system, with temperature variations ranging from 90 Kelvin (about -183) to 700 Kelvin (about 427).

1. Mercury.

Mercury is the innermost and smallest of the eight planets in the solar system, and it is also the closest planet to the Sun. Known as Chenxing in China, it has the largest orbital eccentricity of the eight planets.

2. Venus: Venus is one of the eight planets in the solar system, and it is the second planet in order from near to far from the sun. It is the closest planet to Earth.

3. Earth: 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) 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.

5. 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 is one of the eight planets in the solar system and ranks 6th in 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.

7. Uranus.

Uranus is the seventh planet (astronomical unit) in the solar system from the inside out, the third largest in volume and fourth in mass in the solar system, and orbits the sun almost horizontally.

8. 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.

There are eight planets, in order of distance from the Sun: Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, Neptune.

In order of density: Saturn, Jupiter, Uranus, Neptune, Mars, Venus, Mercury, Earth.

The title is wrong, there are only eight planets in the solar system.

The eight planets refer to the eight planets of the solar system, which are Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus, and Neptune in descending order from near to far. 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. Whereas Uranus rolls in orbit. Pluto, once considered one of the "Nine Planets", was defined as a "dwarf planet" on August 24, 2006.

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 near its orbit. According to this division, there are only eight planets in the solar system: water, metal, earth, fire, wood, and earth, plus Uranus and Neptune.

1] Unlike the concept of nine planets mentioned before 2006, Pluto was classified as a dwarf planet and removed from the list of nine planets in the solar system in Resolution 5 adopted at the 26th International Astronomical Union in Prague on 24 August 2006. It must be a celestial body orbiting the star - Pluto coincides. The mass is large enough to rely on its gravitational pull to make the celestial body appear spherical, but Pluto has not been able to clear other objects in its orbit and is therefore downgraded to a dwarf planet.

Celestial bodies that also have sufficient mass and are spherical in shape, but cannot clear other objects in the vicinity of their orbits are called "dwarf planets", and Pluto fits this definition and has been recognized as a "dwarf planet" by the International Astronomical Union. So Pluto is classified as a dwarf planet. Since then, there have been only eight planets in the solar system.