Water: mercury. Crystal: The homonym of "gold" refers to Venus. Ball: Earth. Burning wood: "Fire" refers to Mars and "Wood" refers to Jupiter. Into the earth: "Earth" refers to Saturn. Tianya Haijiao: "Heaven" refers to Uranus, and "Sea" refers to the fire, water, earth, sea, king and moon of Neptune or Jin Mu.
According to the distance from the sun, it is Mercury, Venus, Earth, Mars, Jupiter, Saturn, Uranus and Neptune. The order of volume is Jupiter, Saturn, Uranus, Neptune, Earth, Venus, Mars and Mercury. Among the eight planets, except Venus and Uranus, most of them rotate in the same direction as the revolution. Venus' rotation direction is opposite to the revolution direction, while Uranus' rotation direction makes an angle of 97 with the revolution orbit.
Definition of a planet: first, a celestial body that must revolve around a star; Second, the mass is large enough to make the celestial body become spherical by its own gravity; Third, there should be no other objects near this orbit (clean up other objects in its orbit). According to this classification, the planets in the solar system are only water, gold, earth, fire, wood and earth, plus the Eight Heavenly Kings and Neptune.
Specific introduction of the eight planets
Mercury: Mercury is the second lowest of the nine planets, but it is the closest planet to the sun.
Venus: Venus is the second farthest planet from the sun. At any time of sunset, luminous celestial bodies can be seen in the western sky. Venus doesn't glow by itself. It shines by reflecting sunlight.
Earth: The earth is the third planet in the sequence from near to far from the sun, and it is the only place suitable for the survival and reproduction of life among the nine planets.
Mars: Mars is the fourth planet in the sequence from near to far from the sun, also called the red planet. As soon as it appears in the sky, you can see its faint red color.
Jupiter: Jupiter is the fifth planet in the sequence from near to far from the sun and the largest planet in the solar system. It is 1 1 times that of radius of the earth, 13 16 times that of radius of the earth and 3 18 times that of radius of the earth.
Saturn: Saturn is the sixth planet in distance from the sun and the second largest planet in the solar system. It has seven beautiful rings of light, which are bright and dazzling, so some people call Saturn the beauty of stars.
Uranus: Uranus is the seventh planet according to the distance from the sun and the third among the nine planets in the solar system. Uranus is blue-green because its atmosphere contains methane.
Neptune: Neptune is the eighth planet orbiting the sun. It is a light blue planet. It is a typical gas planet.