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The sun is the central body of the solar system and occupies the overall mass of the solar system. The eight planets in the solar system, asteroids, meteors, comets, outer Neptune objects, and interstellar dust all revolve around the Sun, which revolves around the center of the Milky Way.
The sun can play a role in disinfection and sterilization, and can also promote the absorption of vitamin D and calcium in the body. The sun's rays are relatively strong, and there are special ultraviolet rays, which can promote the absorption of calcium and phosphorus by the cells of the small intestinal mucosa, so that the calcium content in the human body gradually increases.
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It takes 8 minutes and 20 seconds for sunlight to reach the Earth, and the speed of light reaches 300,000 kilometers per second. To calculate the distance between the Sun and the Earth, you need to replace 8 minutes and 20 seconds with seconds. One minute is 60 seconds, a total of 8 minutes, and then remove the 0 of 60, and then multiply it by 6 8 48 (seconds).
Because 0 is removed after 60, adding 0 after 48 is 480 seconds. Because it takes 8 minutes and 20 seconds for the sun to reach the earth in front, and 20 seconds need to be added, 480 + 20 = 500 (seconds). 300,000 kilometers per second multiplied by 500 seconds equals 100 million kilometers.
300,000 kilometers seconds 500 seconds = 100 million kilometers, so the sun is 100 million kilometers from the earth.
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The Earth's orbit around the Sun is a nearly circular ellipse, and the Sun is located at a focal point of the elliptical orbit, so that the distance between the Sun and the Earth is constantly changing over the course of a year or even a day.
At the beginning of January every year, the Earth is at the perihelion of its orbit around the Sun, and the distance between the Sun and the Earth reaches a minimum value, which is about 100 million kilometers.
At the beginning of July every year, the Earth is located at the aphelion point of its orbit around the Sun, and the distance between the Sun and the Earth reaches its maximum value, which is about 100 million kilometers.
Compared with the average distance between the Sun and the Earth (100 million km), the difference in the distance between the Sun and the Earth in one year (100 million km) is almost negligible. Then in a single day, the change in the distance between the sun and the earth is even more insignificant.
The change in the distance between the sun and the earth is so small that people cannot feel it. The Sun is a little farther away from us in the morning and a little closer at noon, and the difference between the two is about the radius of the Earth, which is only 1,2300 the distance between the Sun and the Earth. Although the distance is small, it cannot be ignored and there are changes.
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According to the measurements and calculations of modern radar, the average distance between the Sun and the Earth is about 100 million kilometers. If you want to walk from the earth to the sun, it will take 3,500 years to walk 5 kilometers per hour, day and night; If you take a train, the speed of 1 to 0 kilometers per hour also needs to be non-stop for more than 170 years. If sound could travel in space, it would take about 13 years and 9 months for the sound from the sun to reach the earth.
Even the fastest light, traveling 300,000 kilometers in one second, takes 8 minutes and 19 seconds to reach the Earth from the sun.
The distance between the Sun and the Earth is approximately how many kilometers.
The average distance between the Sun and the Earth is an astronomical unit (AU). Because that's the definition of an astronomical unit itself.
The astronomical unit (abbreviated as au) is a unit of length that is historically approximately equal to the average distance between the Earth and the Sun. One of the astronomical constants.
The basic unit for measuring distances in astronomy, especially between celestial bodies within the solar system, the average distance from the Earth to the Sun is one astronomical unit. The unit of astrology is about 100 million kilometers.
How many light years is the distance between the Earth and the Sun?
The distance between the Earth and the Sun is 100 million kilometers, and it takes about 500 seconds, or minutes, or 8 minutes and 20 seconds, for light to pass through this distance.
It's light minutes. This distance is too short to be calculated in light years.
If you have to count it in light years, that's fine. A minute of light is equivalent to an hour of light, which is equivalent to a day of light, which is equivalent to a light-year.
How many kilometers is the Earth from the Sun.
In 1976, the International Astronomical Union established it as 149597870 kilometers and used it as an astronomical unit of measurement of distance. At the speed of light, it takes about 8 minutes from the sun to reach the earth.
How far is the Earth from the Sun! Do the plane a few hours to arrive.
100 million kilometers The earliest Wright brothers' aircraft was 3 meters per second, which took 1582 The speed of the aircraft during World War I was about 200 kilometers per hour, and it took 85 years The speed of the aircraft during World War II was about 500 kilometers per hour, and it took 34 years The Korean battlefield and the current civil aircraft were about 1,000 kilometers per hour, and it took 17 years The speed of modern advanced fighters is about 2,700 kilometers per hour, and it took 7 years The world's fastest aircraft reached a speed of 10,200 kilometers per hour, and it took less than 2 years.
The distance between the Sun and the Earth is approximately how many kilometers.
Earth is the third planet from the Sun and is located at a distance of about 150000000 km. The Earth orbits the Sun in days and rotates once in hours. Its diameter is 12756 kilometers, which is just over a hundred kilometers larger than Venus.
78% of our Earth's atmosphere is nitrogen, 21% oxygen, and the remaining 1% is other components. The average temperature on the Earth's surface is 15 degrees Celsius, and the average air pressure is Pa.
More than 2,000 years ago, such a story was recorded in the book "Liezi": >>>More
The Earth's orbit around the Sun is a nearly circular ellipse, and the Sun is located at a focal point of the elliptical orbit, so that the distance between the Sun and the Earth is constantly changing over the course of a year or even a day. >>>More
The second pair. Ignoring the revolution of the earth and considering only the rotation, from the center of the sun to a fixed point on the earth's surface, the distance must be long in the morning and short at noon. It's just that this change in distance is not enough to cause hot at noon and cool in the morning, and the hot at noon and cool in the morning is caused by the angle of incidence of the sun, not the truth mentioned in "Two Children's Debate". >>>More
Over the course of the year, the Earth is at perihelion on January 2 and aphelion on July 5. During the period when the Earth moves from perihelion to aphelion, the Sun is farther than sunrise at noon, 1,000 kilometers in early February and 6,400 kilometers in early April. When the Earth moves to aphelion, this difference disappears. >>>More
Because the possibility of life formation on various planets is too small.