Eight planets orbiting the sun. Just after it touched the side of Mercury, its rotation and rotation were too slow, and Venus was hit sideways again, walking slowly without stopping. The earth is thrown at the center line, and the impact force is the greatest, so the rotation is the most violent, and the rotation period is the fastest, and a piece of the moon is broken. It is sucked by the earth's rotation and cannot escape, so it rotates, and the ejection spins out of shape. It hits Mars eccentrically, hits Jupiter eccentrically, Saturn rotates with eccentric collision, and Uranus, Neptune and Power, seem to be unable to rotate in the outer circle.
In our solar system, eight planets are orbiting, from near to far from the sun. They are Mercury, Venus, Earth and Mars, Jupiter, Saturn, Uranus, and Neptune. Specific data: Mercury is second to last, and the sun is the closest. planet. Venus is as far away from the sun as the second planet, so any time of sunset, the one glowing in the western sky is Venus. Venus does not emit its own light, but reflects the sun's light. Earth's distance from the sun. In order from near to far, it is the third planet, the only one among the nine planets suitable for life. Mars is the fourth planet in order from the sun and is also called the red star. When it appears in the sky, you can see it being reddish. Jupiter is the fifth star from the nearest to the sun and the largest planet. Its radius is 11 times that of the Earth, its volume is 1316 times, and its mass is 318 times that of the Earth. Saturn is according to the distance from the sun. The sixth star in the distance is the second largest planet. It has seven beautiful rings. Its rings are bright and eye-catching, making Saturn the beauty among the stars. Uranus is the seventh planet and ranks third in size among the nine planets. The atmosphere contains methane, which makes Uranus appear blue-green. Neptune, the eighth planet, becomes a light blue planet. Typical gas planet. It is one of the nine planets. Pluto is defined as a dwarf star on August 24, 2006. Also in the solar system, there are smaller planets, distributed between Mars and Jupiter, in the asteroid belt, and from Kuiper. The belt extends for nearly a light-year. The distant Oort Nebula belongs to the solar system. The eight major planets have satellites. Now it seems that there are many Jupiters, and humans have discovered Jupiter. It has 68 satellites. Sun, Jupiter and Saturn: Uranus, Neptune, Earth: Venus, Mars and Mercury, this can be seen. Jupiter is the largest in size. Saturn comes second. The small arrangement of planetary masses, from largest to smallest, is: Jupiter, Saturn, Neptune, Uranus, Earth, Venus, Mars and Mercury are the smallest.
Comets arranged in brightness will not emit their own light outside the solar system. Reflects the sun's rays. Magnitude is a method of expressing light in astronomy, that is, m (magnitude). It has been stipulated in astronomy that the brightness of stars has a regularity, which is expressed by star magnitude. The smaller the magnitude number, the dimmer it is. The brighter the star, the difference in brightness is 2.5 times for every 1 star difference in magnitude. It needs to be determined according to the situation. Planets in different periods have different brightness. It can be determined according to the eight planets and when they shine brightest now. To make a simple comparison, let’s take a look below. They have specific data:
Venus is at its brightest: -4.4m Mercury is at its brightest: -2.6 m Mars is at its brightest: -2.9112m Jupiter is at its brightest Brightest time: -2.9467m Saturn's brightest time: -0.3m Uranus's brightest time: 5.5m Neptune's brightest time: 7.8m
Among the eight planets, the planets Venus, Wood, Water, Fire, and Earth are On the human earth, Venus is visible to the naked eye in the west in summer evenings. It emits light yellow with a maximum brightness of -4.4. It is called the morning star. Venus is always visible in the east three hours before the sun rises. When it is called Chang Geng Star, the sun is three hours behind and can be seen in the northwest. Venus is visible in the west, so it is called Chang Geng Star. At this time, the sky is brightest in the south, so it is easy to see Mars. It is next to Venus at 6 o'clock in the evening. At 6 o'clock in the summer evening, the sky has not yet darkened. Saturn is not visible at 6 o'clock in the evening in the summer and has already set to the west. . Orbiting around a star; second, it is massive enough to rely on its own gravity to make the celestial body appear spherical; there should be no other objects in its orbit.
Mercury
In ancient China, it was called Chenxing. The planet in the solar system is mainly made of stone and iron, and has a high density. Its rotation period is 58 days, and its rotation direction is the same as its revolution. It takes 88 Earth days to orbit the sun. With an average speed of 47 miles, it is the fastest moving planet in the solar system. It is the smallest of the eight planets and the closest to the sun. Mercury ranks first among the eight planets in the solar system. Smaller in diameter than Ganymede and Titan, the sun on Mercury is twice as bright as on Earth, and the equatorial sunlight on Mercury can reach up to 400 degrees. In hot places, tin and lead will melt, not to mention the water has long evaporated. But on the side facing away from the sun, there is no sunlight for a long time, and the temperature reaches -173 degrees. The United States launched the Mariner to explore the surface of Mercury and sent it to the ground. More photos. Mercury looks like the moon, with craters of different sizes, as well as radial plains, rift basins and other terrains. Mercury is the second densest celestial body after the Earth.
The rotation period is 58.6 days. The period is 87 days. The average radius is 2440km and the volume is 6 10^10.
The mass is 3 10^23, the surface area is 7 10^7, the escape velocity is 4km/s, the distance from the sun is 58 million miles, the surface temperature of the star is 427 degrees, -183 degrees (night)
Venus
p>Venus is the second planet and the closest planet to Earth. Ancient Chinese Platinum Star. The revolution period is 224 days. The brightness at night is second to the moon, and Venus must be before sunrise. The brightness is maximum after sunset. It appears a little before sunrise and is bright in the eastern sky; sometimes it appears at dusk and appears as Chang Geng in the western sky. Venus is the brightest star in the sky and is at its largest. Sirius is -4.4 magnitude, like a dazzling diamond, the goddess of love and beauty. The Romans called it the God of Beauty. The area is 400 million kilometers, the perihelion is 100 million kilometers, and the aphelion is 1 billion kilometers. The mass is 41024 kilograms, the surface gravity is 8m/s2, and the escape velocity is 10k/s. The distance from the sun is 100 million kilometers (0.72 astronomical units from Earth).
Earth
The Earth is the third planet with the largest diameter, mass and density in the solar system. The Earth is 4.6 billion years old and has a natural satellite, the Moon, surrounding the Earth. The cycle keeps spinning for thirty days. The earth rotates on its axis 24 hours a day and revolves around the sun in four seasons. The average distance between the earth and the sun is 1.4 billion kilometers. It is the third largest planet with an equatorial radius of 6,000 kilometers. Ranked fifth among planets. Earth has a mass of 510^24k, an average density of 5507/m3, a surface temperature of 15 degrees Celsius, an escape velocity of 11km/s, an albedo of 0.367, and a rotation period of 23h56m. . Semi-major axis: 0., orbital inclination 7.25 to the solar equator, aphelion distance 100 million km, orbital circumference 900 million km. Argument angle of perihelion 114 Orbital semi-axis 100 million miles Revolution speed: 29km/s,
Revolution speed: 30.287km/s Minimum revolution speed: 29.291km/s Satellite: Moon Universe speed: 11.186km/s Sidereal day : 0.997258d, equatorial circumference: 40,075.13km, aspect ratio: 0. Equatorial rotation rate: 465.11m/s, so it has the fastest rotation. Due to the fast rotation of the earth, the air frequency wave flows quickly, and the *magnetic pole has the strongest gas. The liquid solid body receives the centrifugal force of rotation, and the turnover produces attraction. Hydrogen dioxide is below 100 degrees, and liquid water is above zero. It has strong magnetism at the north and south poles. It flows in the north-south direction of N and S, and flows eastwards at sunset in a regular pattern. . The chemical circle has good rules, the solids are stable and have no drift, and the materials are rich and complete. The temperature is stable and the pH is moderate. The thick ozone layer protects the water waves, wind waves, acoustic waves, and long and short frequency. The difference is large and can be tolerated by animals and plants. There are seven types of light radiation, including infrared and ultraviolet. It is suitable for a variety of materialization and cycle metabolism. It is the only animal and plant that has bacteria. Physical chemistry is changing. It continues to evolve and reproduce, and the old and new are developing.
Mars (Mars)
Mars is the fourth planet, a terrestrial planet, with a diameter of It is half the Earth's, with a rotational inclination period and twice the orbital period. The orange-red appearance is due to the hematite on the surface. Mars is basically a desert, with sand dunes on the surface and no stable liquid water. The atmosphere is thin and thin. It is cold, with dust suspended in it, and dust storms occur every year. There are polar caps composed of water ice and dry ice at the poles of Mars, which increase and decrease with the seasons.
The mass is 60 million 23kg, and the density is 3.94g/cm3 in diameter. 6794 kilometers, surface temperature 63, escape velocity 5.km/s, albedo 0.15, maximum visual star: average 2 rotation period 24.6229h, the nearest distance from the earth is 50 million kilometers, and the farthest is >400 million kilometers. Semi-major axis: 200 million kilometers, eccentricity: 0. Revolution period 687 days, orbital inclination: 1.850 61 Ascending node longitude: 49 Distance from the Sun: 227.94 million kilometers Radius: 3397km
Jupiter
p>It is the fifth planet. It is the largest planet and the fastest rotating planet. It is mainly composed of hydrogen and helium, and the core temperature is estimated to be high. Up to 30,500. In ancient China, it was called the Year Star. It actually revolved around the celestial sphere with a cycle of twelve years, which is why it is the same as the Earthly Branches. Jupiter has the largest volume and mass in the solar system. Its extremely massive mass is more than 2.5 times that of the other seven planets combined, 318 times that of the Earth, and its volume is one thousand times that of the Earth. The sun is fifth in distance. At the same time, it is also the fastest rotating planet in the solar system. Jupiter is not a perfect sphere, and its poles are flattened and the equator is slightly bulging. The fourth brightest star in the sky, after the sun, the moon and Venus. Sometimes, Jupiter is slightly dimmer than Mars, and sometimes it is brighter than Venus. Jupiter is composed of hydrogen and helium, with a core temperature of 30,000. There is a red spot on the surface of Jupiter that is 40,000 kilometers long, 10,000 miles from north to south, and covers an area of ??400 million square meters. Many people think it is a never-ending whirlwind that swallows three Earths in scope. The mass is 1 10^27, the average density is 1.g/cm3, the diameter is 14 thousand kilometers, the surface temperature is -168, the escape velocity is 60., the apparent star is -2.9, and the rotation period is 9 hours. Second semi-major axis: 5 AU, revolution period 11.8 years.
The orbital inclination is 1.3 degrees, the ascending node longitude is 100 degrees, and the eccentricity is 0.04891.
Saturn
It is the sixth planet in the solar system and is second in size to Jupiter. Jupiter, Uranus, and Neptune are gas Jupiter giants. In ancient China, it was called Zhenxing. The ancients called Saturn the "filling star". Saturn has a long orbital period. It has 28 constellations in 29 years in ancient times. It is in one constellation almost every year, which means that it fills up the constellation. It is called the "Zhenxing" or "filling star". It has a diameter of 1193 hundred kilometers and is the second planet in the solar system. Neighbor Jupiter is very similar, with liquid hydrogen and helium on its surface and thick clouds above it. Saturn's strong winds are raging, with wind speeds of 1,06 kilometers per hour in the east-west direction. The clouds above are caused by these strong winds, and there is a large amount of crystallized ammonia in the clouds. Mass: 95.16 Average density: 0.69g/cm3 Diameter 120660 Surface temperature: -178 Escape velocity 35.6/s Albedo 0.57 Visual magnitude: -0.4~1.3 Rotation period: 10.656h Revolution period 29 years Orbital inclination: 2.5 Orbital linear velocity 30,04/h Yellow-red angle 26.73 Atmosphere composed of hydrogen and helium Largest satellite: Titan radius 2575
Uranus
It is the seventh planet from the sun and the third largest in size star, ranking fourth in quality. Urras, god of the sky, priest of Cronus, grandfather of Zeus. The first modern discovery, although the luminosity is the same as that of the five traditional planets, the brightness is visible to the naked eye because it is fainter, as ancient observers discovered. For the first time in the modern history of the solar system, the boundaries are expanding. The first planet discovered with a telescope. Uranus and Neptune have different internal and atmospheric compositions, larger gases, and the same as Jupiter and Saturn. Astronomers set up different ice giants to place them. The composition of the atmosphere is hydrogen and helium, including a high proportion of water, ice formed from ammonia and methane, and hydrocarbons. The lowest temperature in the solar system, the temperature is only 49K, the complex cloud structure, water is in the lowest cloud layer, the mass of methane is 810^25, the semi-major axis of the orbit is 2 billion km, the orbital eccentricity: 0. The revolution period: 84.323326 years, the rotation period: 17 hours with the sun Distance 2.869 billion kilometers Number of satellites 27 Surface temperature -180 c Diameter 52,000 kilometers Rotation direction: clockwise Far-solar planet atmosphere Hydrogen, helium, methane Halo thickness: 1.6 kilometers
Neptune
p>The sun is the eighth in its journey and the fourth in its revolution. Its diameter is smaller than that of Uranus, but its mass is much greater. The mass is 17 times that of the Earth and resembles a twin. Due to its low density and high mass, it is 14 times that of the Earth. Because Neptune, the god of the sea, is translated into Chinese as Neptune. Poseidon uses a trident. A typical gas planet, the whirring is distributed in a band. The largest storm or cyclone, the storm is the fastest in the solar system, reaching speeds of 2,000 miles per hour. Neptune's blue color is caused by the absorption of methane in the atmosphere and red light from sunlight. Albeit a cold one. And the desolate big planet. Science speculates that there is a heat source. Like Saturn and Jupiter, Neptune has internal heat. It radiates twice as much energy as it absorbs solar energy. It is a light blue planet, and people call it Neptune based on the name of the planet. Master 1/3 of the universe. Diameter: 49,532 kilometers Length: 1.0247e26 kilograms Aphelion: 4,553,946,490km Perihelion: 4,452,940,833km Escape velocity: 23.5 km/s Rotation period: 15h57min59s Revolution period: approximately: 164.8 Earth years Special features: Number of planetary satellites under the tip of the pen: 14 The largest satellite: Triton (diameter 2705 kilometers)
Pluto has disappeared. It has the slowest rotation speed and is far away. There is no information about it now and it has been excluded from the solar system.
The stars and planets in the universe, Hanging in the sky, there is no distinction between up and down, and it is oriented east, west, north and south. It hides a lot of secrets. With the advancement of science and technology, we only understand a little bit about how planets form and how they interact with each other. Is Mars really suitable for humans? Questions like this are what scientists want to know, and the unsolved mysteries of the universe are gradually revealed.
< p> After 800 million years, the earth has continuously decomposed the ozone layer, and the acid, alkali and salt have neutralized each other. Most of the microorganisms and algae in the water can form life cycles, and marine animals have become active, and various animals and plants have emerged. Hundreds of millions of years later, there will be apes, who are the most advanced animals. Hundreds of millions of years later, they will live in tribes and form primitive societies to fight against external threats and fight for wild nature. Tens of thousands of years of primitive society. The growth of all things depends on the sun, and human wisdom surpasses all things. All things serve people, creating a world with seven states, four oceans and eight seas, Antarctica, Asia, Africa and Latin America, South America, North America, Austria and Africa, each dominating one side and hundreds of countries, and history is rolling. In the Central Plains of Southeast Asia, the Chinese nation has lived for five thousand years, with thirty provinces and fifty ethnic groups. The ancestors of the people are Fu Xichuang, the Three Emperors and the Five Emperors.Nanyang people of Han nationality. , one of the five sages of inventors, Sima Xiangru, Yang Xiong, and Ban Gu are called the four great gods of the Eastern Han Dynasty in China. He is an astronomer, mathematician, inventor, geographer, and mathematician. We all have ten fingers, so we can count them in decimal places. One heartbeat is counted in one second, one step is one meter and five feet long, and the total area, volume and weight are calculated in years.
I used to think that light was the fastest, that the universe was measured in light-years, and that everything was measured in terms of measurements.