How high is the sun? What is the height of the sun?

The distance between the sun and the earth is variable.

Because of the rotation and revolution of the earth.

But there is a general data as follows:

Average altitude of the Sun (i.e. one astronomical unit): 149,598,020 kmThe highest altitude of the Sun: 152,100,000 km.

Lowest altitude of the Sun: 147,100,000 km.

There are also some other data about the Earth.

The average speed of the Earth's revolution: kilometers and seconds.

Rotational velocity at aphelion: kilometers and seconds.

Orbital velocity at perihelion: kilometers and seconds.

Orbital length of the Earth's revolution: 393,120,000 km.

Eccentricity of the Earth's orbit at the revolution:

The period of one revolution of the Earth (return year): 365 days 5:48:46 seconds (i.e.) The period of the Earth's rotation: 23:56:4 seconds.

Zodiac tilt (yellow-econjunction): 23°27

Equatorial radius long picoa: 6,378,140 m.

Pole radius length b: 6,356,863 m.

Flattening ratio (a-b).

Average radius (radius of a sphere of the same volume as the Earth's ellipsoid): 6,371,110 m Meridian circumference: 40,008,548 m.

Earth's volume: 1,083,320,000,000 cubic meters.

Earth mass: 1027 grams.

Average density of the Earth: grams of cubic centimeters.

If you ask me how high the sun is, I'll tell you how real I am.

The height of the Sun is about 150 billion meters. The height of the sun refers to the distance between the sun and the earth. It is also called the distance between the sun and the earth.

Also known as solar distance, it refers to the length of the straight line from the center of the heliocenter to the center of the earth.

1. The sun is the solar system.

The center of the celestial body, which 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 in turn orbits the Milky Way.

The center of the revolution.

2. The Sun is currently passing through the local interstellar cloud in the local bubble of the Orion Arm at the inner edge of the Milky Way. There are 50 of the closest star systems within 17 light-years of Earth, and in terms of chemical composition, about three-quarters of the Sun's mass is now hydrogen, with almost all of the rest being helium, including oxygen, carbon, neon, iron, and other heavy elements with less than 2% mass.

3. The height of the sun, that is, the distance of the sun, changes all the time. Because the Earth's orbit around the Sun is an ellipse and the Sun is at a focal point, this distance changes from time to time.

4. The maximum distance of the Sun is 152.1 million kilometers (the Earth is at aphelion.

The minimum is 147.1 million km (the Earth is at perihelion); Average value.

149.6 million kilometres; It takes only 8 minutes and 18 seconds for sunlight to reach the Earth's surface.

When we live on the earth, we see endless mountains, endless plains, endless deserts and Gobi deserts, and vast seas ......If you get on an airplane and look down from the sky, you will feel that the land is really vast. How big is the Earth? Scientists have calculated that it has a surface area of about 100 million square kilometers and a volume of about 10

80 billion cubic kilometers and weighs about 60 trillion tons. If you go all the way south from its northernmost North Pole, it would be 20,000 kilometers to reach its southernmost South Pole. For such a long distance, if you walk 50 kilometers per day, you have to walk continuously for 400 days; If you take a jet that can fly 800 kilometers per hour, it will take you 25 hours to arrive.

And that's only half a circle of the Earth. If we follow its largest parallel, the equator, to the east or west, to fly a full circle, and then return to the original starting point, it will take more than 50 hours, and we will have to fly for more than two days in a row. It took nearly three years for the navigator Magellan to lead a fleet around the globe.

The size of the earth can be imagined. If we compare the area, the entire earth's area is equivalent to 53 times the area of China's territory and 2,000 times the area of the British mainland. But only 29% of the Earth's surface is land, and 71% is ocean.

The size of the Earth can be described by a number of indicators. Now I will tell you the number of some indicators.

The average radius of the Earth is kilometers;

The Earth's equatorial radius is kilometers;

The Earth's polar radius is kilometers;

The average density of the Earth is to the power of kilograms cubic meters;

The mass of the Earth is to the power of ) kilograms;

The volume of the Earth is to the power of cubic kilometers;

The surface area of the Earth is to the power of square kilometers. The total area of the earth is 510000000 square kilometers, the land area of the earth is 149000000 square kilometers, the earth's ocean area accounting for the earth's surface area is 361000000 square kilometers, and the volume of the earth accounting for the earth's surface area is cubic meters. To illustrate by example, suppose a person travels 50 kilometers a day, and it takes 127 days to walk from the center of the earth to the surface and 801 days to go around the earth.

More than 23 million people stand in a circle hand in hand to enclose the earth. Based on the world's population of 5 billion, the per capita land surface area is only square kilometers, and if only the land area is calculated, the per capita occupancy is less than square kilometers. Compared to the other planets of the solar system, the Earth is 110 times larger than the smallest Pluto, and 1,1316 times larger than the largest Jupiter.

The Earth is 48 times larger than the Moon and 11.3 million times the size of the Sun.

It is 1.3 million times larger than the Earth, the central body of the solar system. An ordinary star in the Milky Way. The average distance from the earth is 149.6 million kilometers, the diameter is 1.39 million kilometers, the average density is 1409 grams cm3, the mass is 1989 1033 grams, the surface temperature is 5770 k, and the core temperature is 15 million k.

From the inside to the outside, they are the solar nuclear reaction zone, the solar troposphere, and the solar atmosphere. Thermonuclear reactions are constantly taking place in its central region, and the energy produced is radiated into space. One in 2.2 billion of the energy radiates to the earth, becoming the main source of light and heat on the earth.

The Sun is the most striking object in the sky, it is a star located in the center of the solar system, and its apparent magnitude is equal (the magnitude of the star is divided according to the amount of stellar light received on the Earth is called "apparent magnitude", and the brightness decreases with the increase of the magnitude number, with zero magnitude stars brighter than first magnitude stars and negative magnitude stars brighter than zero magnitude), 500,000 times brighter than the Moon (the Moon has an apparent magnitude of 12 8 magnitude). The diameter of the Sun is 1.39 million kilometers, which is 109 times that of the Earth and 400 times that of the Moon. The Sun is 1.3 million times the volume of the Earth, 330,000 times the mass of the Earth, and has an average density of grams3.

The Sun weighs 270 times more than the Moon, and the Sun is like an elephant to an ant compared to the Moon. The distance between the Sun and the Earth is 100 million kilometers, which is 400 times the distance from the Moon to the Earth. The Sun is a red-hot ball of gas, rising from the surface to the center, with a central area of about 16 million degrees Celsius and 300 billion atmospheres.

In the center of high temperature and high pressure, a huge nuclear reaction zone is formed, its composition is hydrogen and helium, and when hydrogen is converted into helium, a huge amount of energy can be released, which is the nuclear fusion reaction. The energy released in the nuclear fusion reaction is radiated to the surroundings in the form of electromagnetic waves, which is often referred to as solar radiation. Five billion years ago, since the day the sun was formed, it has been releasing enormous amounts of energy without interruption, and it is estimated that this state will continue for another 5 billion years.

The surface of the sun visible to the naked eye is the "photosphere", the periphery of the "photosphere" is the "chromosphere", and the outermost layer is the "corona", which make up the atmosphere of the sun. The Sun also has a rotational and orbital motion, and the rotation period is about 25 days in the solar equatorial zone and about 35 days in the polar region; The orbital period (the period that orbits the galactic core) is about 100 million years (assuming that the orbital eccentricity is zero).

The solar altitude angle is simply called "solar height". The height of the sun is the most important factor that determines the amount of solar heat energy received by the Earth's surface. We use h to represent this angle, which is numerically equal to the horizon height of the Sun in the Earth's horizon coordinate system.

The height angle of the sun is calculated as follows

sinh=sin sinδ cos cosδcost, where δ represents the declination of the sun, denotes the geographic latitude of the place of observation, and t denotes the local time; The formula for calculating the solar altitude angle at noon is h=90°-|

The significance of the height of the sun.

1. The height of the sun is 0° on the morning and dusk line, indicating that it is experiencing a day and night cycle;

2. The height of the sun in the day hemisphere is greater than 0°, which means daylight;

3. The height of the sun in the night hemisphere is less than 0°, indicating night.

The height of the sun refers to the angle between the sun's rays and the earth's plane (an angle, not a length), that is, the elevation angle of the sun in the local area, also known as the angle of solar altitude. The height of the sun is related to the latitude (δ) of the point where the sun shines directly and the latitude of the local area ( ). The height of the sun at midheaven (noon sun height).

h＝90°－|

Noon Sun Altitude: The maximum midday solar height of the day occurs at noon.

The height of the sun at midnight (midnight solar altitude).

h＝90°-|