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Anonymous users2024-02-15The Sun is the central body of the solar system, the only star in the solar system, and the closest star to the Earth. The Sun is located near the symmetry plane of the Milky Way, about 33,000 light-years from the center of the Milky Way and about 26 light-years north of the galactic plane, and on the one hand it rotates around the galactic center at a speed of 250 kilometers per second, and on the other hand, it moves at a speed of kilometers per second relative to the surrounding stars in the direction of Vega.
The diameter of the Sun is 10,000 kilometers, which is 109 times that of the Earth; The volume of the Sun is 14.1 billion cubic kilometers, which is 1.3 million times that of the Earth; The mass of the Sun is about 200 billion trillion tons, which is 330,000 times that of the Earth. It concentrates the mass of the solar system and is an absolute supreme "king". However, in the universe, it is still just an ordinary star of medium mass.
The Sun is a hot, gasy planet with no solid stars or cores. From the center to the edge, the sun can be divided into nuclear reaction zones, radiation zones, convective zones, and atmospheres. 99% of its energy is produced by thermonuclear reactions in the nuclear reaction zone of the center.
The density and temperature of the center of the sun are extremely high. The main components of the solar atmosphere are hydrogen (about 71% by mass) and helium (about 27% by mass). The atmosphere of the Sun can be divided into three layers: the photosphere, the chromosphere, and the corona from the inside to the outside.
The internal structure of the sun.
The interior of the Sun can be mainly divided into three layers, the core zone, the radiation zone and the convective zone.
The energy of the sun** is at its core. The core temperature of the Sun is as high as 15 million degrees Celsius, and the pressure is equivalent to 250 billion atmospheres. The gas in the core is extremely compressed to 150 times the density of water.
Nuclear fusion takes place here, and 700 million tons of hydrogen are converted into helium every second. In the process, about five million tons of net energy are released (roughly equivalent to 3,860 billion gigajoules, followed by 26 zeros). The energy produced by fusion is transmitted outward through convective and radiation processes.
The energy produced by the core takes millions of years to reach the surface.
The radiation zone is enclosed outside the core area.
The gas in this layer is also in a state of high temperature and pressure (but lower than the core region), and the frequent collisions between particles make it a long time (millions of years) for the energy generated in the core region to pass through this layer to reach the convection region.
The outer part of the radiation zone is a convective zone.
The transfer of energy in the convective region is much faster than in the radiation region. A large amount of gas in this layer transports energy outward in the form of convection. (It's a bit like boiling water, the heated part goes up, and the cooled part goes down.)
The bubble-like structure produced by convection is what we see in the photosphere of the solar atmosphere"Rice grain tissue.
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Anonymous users2024-02-14The central object of the solar system, a luminous sphere with a diameter of 1,392,000 km, is the closest star to Earth and most closely related to Earth. The SunSun is the closest star to Earth and is the central body of the solar system. The mass of the solar system is concentrated in the sun.
Basic parameters. Observational data.
Mean distance between the Sun and the Earth (1 astronomical unit) meters (150 million km) Maximum distance between the Sun and the Earth meters Closest distance between the Sun and the Earth meters Apparent magnitude Absolute magnitude Isothermal magnitude Equivalence Absolute thermal magnitude etc.
Physical data. Diameter 1,392,000 km (109 times the diameter of the Earth) [3] Surface area 10 12 km2 Volume: 10 18 cubic km (1.3 million times the size of the Earth) Mass:
kilogram (333 400 times the Earth's) Relative to the Earth's mass 333,400 Density 1411 kg m3 Density relative to the Earth Density relative to water Surface gravitational acceleration m seconds 2 (times the acceleration of the Earth's surface gravity) Surface temperature 5780 kV Core temperature about 15 million kV Coronal layer temperature 5 200 kV Luminosity (ls) 10 26 J s-1
Orbital data. Rotation period at the equator: 27 days, 6 hours, 36 minutes, latitude 30°:
28 days, 4 hours, 48 minutes, Latitude 60°: 30 days, 19 hours, 12 minutes, Latitude 75°: 31 days, 19 hours, 12 minutes, orbital period around the center of the Milky Way 10-8 years.
Other Data. Age of the Sun: Approximately years Astronomical symbols:
Solar Period: Year Total Radiant Power: Watts (Joule Seconds) Solar Constant f Car·cm 2·min -1 Spectral Type:
g2v velocity of the solar surface detachment 618 km sec velocity of the solar wind near the Earth: 450 km sec velocity of the sun (direction 18h07m, δ 30°) km/s.
Mass and measurement Circular; made of leather or other appropriate materials; The circumference is not longer than 70 cm (28 inches or less than 100 meters, and the width must not be more.
In the daily species some people do not like the sun because it is very spicy. Some people love the sun because the sunset is beautiful. In fact, the ancient people were also full of love for the sun, and there are many ancient poems about the sun, so you might as well follow me to see the poems describing the sun. >>>More
It's the sun's glow. Here's what the encyclopedia says:
Solar and lunar halos often occur on Cirrostratus clouds, and large areas of Altostratus and Nimbostratus behind Cirrostratus are signs of heavy wind and rain. Therefore, there is a saying that "the sun halo is rainy, and the moon is halo at noon". Indicates the presence of cirrostratus clouds, accompanied by halos, and the weather will turn bad. >>>More
AboutThe verses of the sun are as follows: >>>More
I didn't dare to look up at the sun, I just felt that everywhere was dazzling, the sky, the roof, and the ground were all white and bright, and the white was a little red