This phenomenon was in line with Copernicus's theory of the sun's center. Copernicus believed that the sun was at the center of the universe, and the earth was an ordinary planet that revolved around the sun. On one hand, it rotated around the earth's axis, and on the other hand, it revolved around the sun in its own orbit, while the moon revolved around the earth. This theory overthrew the previous geocentric theory and was a major revolution in astronomy, causing a major change in the human view of the universe.
The earth goes around the sun;The earth revolutions around the sun.
I recommend Planet Escape. This was a sci-fi doomsday crisis novel written by Love to Fight the Landlord. Earth deviated from its orbit and flew out of the solar system. The apocalypse had arrived, and disasters had occurred frequently. Humans had built spaceships to escape. The protagonist Xiang Gan was reborn before the disaster and wanted to lead Earth to roam the sea of stars. It had a huge imagination and combined the apocalypse and space escape. The setting was super interesting. Although the ending was a little rushed, it didn't overshadow the beauty. It was a complete novel. The first part of the novel was well written and had a strong sense of immersion. There were many professional terms that could easily describe the principles of science fiction. Compared to the " Three-Body Problem ", it was easier to understand. There were many other highlights, such as human evolution and black technology. The readers commented that it was creative and was a masterpiece in the doomsday genre. It was a four-star recommendation. Those who liked sci-fi could take a look. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
This described the phenomenon of the earth revolving around the sun. The Earth revolved around the Sun in a fixed orbit. Its orbit was an oval orbit with an average radius of about 150 million kilometers. The center of the revolution was the common center of mass between the Earth and the Sun. The direction of the revolution was from west to east, and the revolution period was one year. Because the orbit was oval, the distance between the Earth and the Sun changed during the revolution. The closest position to the Sun (perihelion) was generally in early January after the winter solstice, and the farthest position from the Sun (aphelion) was generally in early July after the summer solstice. The plane on which the Earth revolved was called the ecliptic plane. When the Earth revolved, its axis tilted and its direction did not change, causing the amount of sunlight and heat obtained at different times and places to be different, resulting in the change of the four seasons. According to the amount of sunlight and heat obtained by different places, the Earth's surface was divided into five zones: the tropical zone, the northern temperature zone, the southern temperature zone, the northern frigid zone, and the southern frigid zone. During the Earth's revolution, there were two cycles, the tropical year and the stellar year. The difference of one year between the two was called precession.
It takes 365.25 days for the Earth to circle the sun, which is the length of Earth's stellar year. The Earth's revolution period was the time it took for the Earth to make one revolution around the sun, which was also the standard of the Earth's year. The Earth follows an oval orbit around the Sun at a speed of about 108,000 km/h. The Earth's axis of rotation has an inclination with respect to the direction of its orbit, which causes the day and night changes and seasonal changes at all latitudes of the Earth. The Earth actually moves about 365 days and 6 hours a year, so we have leap years to make up for the difference between the Earth's revolution and the calendar.
The time it takes for the Earth to orbit the Sun is a stellar year, which is 365 days, 6 hours, 9 minutes and 10 seconds, or 365.2564 days. The Earth's revolution period could also be measured by the annual apparent motion of the sun. Due to the different reference points selected, the length of the " year " was also different. The commonly used units of the cycle were the tropical year and the closest year.
The sun, the earth, and the moon had various positions: 1. When it is a new moon, the sun, the earth and the moon form a straight line, and the moon is in the middle. 2. When the first quarter moon, the sun, the earth and the moon form a right angle. 3. When the moon is full, the sun, the earth, and the moon form a straight line, with the earth in the middle. 4. At the last quarter of the moon, the sun, the earth and the moon form a right angle. A simple description of the location relationship was as follows: - New Moon: The sun's rays shine towards the Earth. The moon is located between the sun and the Earth. At this time, the moon is invisible from Earth (because the dark side of the moon faces the Earth). - First Quarter Moon: The Earth, the Moon, and the Sun form a right-angled triangle. Looking at the Moon from Earth, the west (right) side of the Moon is bright. The first quarter moon appears in the first half of the night, in the western sky. - Full Moon: The Earth was located between the Sun and the Moon. The Sun's rays shot toward the Earth, and the Earth reflected the rays toward the Moon. At this time, the Moon was a complete circle from Earth. The full moon could be seen from evening to dawn, appearing in the entire sky from east to west. - Last quarter moon: Earth, the moon, and the sun form a right triangle (opposite to the first quarter moon). When looking at the moon from Earth, the east (left) side of the moon is bright. The last quarter moon appears in the second half of the night, in the eastern sky. The novel New Moon is equally exciting. Everyone is welcome to click and read it!
The sun was the central star of the solar system, occupying 99.86% of the solar system's mass. The eight planets in the solar system (including Earth) and many asteroids revolved around the sun. Earth was one of the eight planets in the solar system. It was ranked third in terms of distance from the sun. It was a terrestrial planet. The moon was the only natural satellite of the earth. It had a large mass and revolved around the earth. In addition, due to the relative position changes of the sun, the earth, and the moon, there would be solar and lunar eclipses. Solar eclipses were caused by the moon moving between the sun and the earth, blocking the sun's rays. At this time, the position relationship was the sun, the moon, and the earth. Lunar eclipses were caused by the moon moving to the shadow position of the earth. The sun's rays were partially blocked by the earth, and the position relationship was the sun, the earth, and the moon. In the three-body system, when the mass of one celestial body was negligible compared to the other two, the remaining two celestial bodies would move in an oval motion around the center of mass according to Kepler's law. The small celestial body would move in the joint gravitational field of the two celestial bodies, but the trajectory of the small celestial body was complicated. Even if the initial conditions were given, it would enter a chaotic state over time. Although the Moon was locked by the Earth's tides, due to the difference in mass between the Earth and the Moon, it would not pull the distance between the Earth and the Moon until the Earth was also locked by the Moon's tides. Now, the Earth and the Moon faced each other on the same side for billions of years, forming a dual planetary system that revolved around the Sun and each other.
The earth would revolve around the sun. The sun was a star located at the center of the solar system. Its powerful gravitational force caused all the planets, including Earth, and other celestial bodies in the solar system to revolve around it.
He recommended a few novels. "Cataclysm of the Earth", a sci-fi futuristic novel written by Shi Mian. There were many civilizations in the universe, and there was a mysterious void corridor. Legend had it that it led to another universe, and many creatures could not come out after entering. The supernova explosion seven light years away didn't destroy Earth. Instead, it allowed life on Earth to evolve. The young man grew up on Earth, rose to power in the universe, and led Earth's civilization to prosperity. Planet Escape was written by Love Fighting the Landlord. The earth deviated from its orbit, disasters continued, species evolved, and humans had black technology. After Xiang Gan reincarnates, he will bring Earth to roam the sea of stars. This book had a lot of imagination. Although the later chapters were a little broken, the beginning was good and had a strong sense of immersion. There were also many scientific elements. It was a good science fiction novel. Countdown to the Earth's Destruction, written by Lost Fish. The Earth would be destroyed in 10 years. The protagonist was chosen to explore the other world and broadcast live around the world. The author had a big imagination and good writing style, but there was a risk of a bad ending. The Richest Man in Instant Noodles was written by Eating Pudding. The main character, Jia Yapeng, was a rich second-generation heir. He started his business from an instant noodle factory, making games, consoles, and so on, building a business empire. It was a cool article. Although it had flaws, it looked cool. I'm Drawing Manga in Tokyo, written on a seaside trip. The main character traveled to Japan in the year 2000 and became a mangaka. He did not choose the King's Way manga, but drew other popular works instead. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>
I recommend "Wanton Movie and Television World", a novel by Liu Shaochong about the infinite universe. The male protagonist, Bai Jue, was free and unrestrained in the world of martial arts. From the beginning of the martial arts journey in "The Deer and the Cauldron," he learned martial arts with the mentality of playing with others. Bai Jue was slightly good-looking, pure and not good with words, 11/11 birthday Scorpio. 717689679 in the book group. "Time Traversal" was a fantasy romance novel by Crimson Night Sandbury. The female protagonist, Su Jiao, was struck by lightning and transmigrated in her natal year. She did not follow the trend. There was also a recommendation from the author. "Pastoral Story" was an ancient romance novel written by generations of kings. After the female protagonist transmigrated, she had a good time in the ancient countryside and enjoyed the rural life. Footprints of the Wilderness, a historical novel with a full bar. The main character Wang Lang transmigrated to Earth, where there was no mass extinction. It was a primitive farming story. Although it was a little toxic and the update was slow, the writing was experienced and worth reading. "Douluo: Heaven rewards hard work, Tang San's defense broken by liver", a light novel of blossoming wheat. Lin Chuan's transmigration Douluo was rewarded by the heavens for his hard work. His ordinary skills were trained to the extreme, and he was extremely fierce in close combat. <a href="/?from=ask_words" style="color:red" target="_blank">Read more exciting novels for free</a>