Because the Earth travels on an elliptical orbit around the Sun, the distance between the two bodies varies from to million kilometres.
The Sun is middle-aged. At around 4. It has enough left to continue to burn Hydrogen Metagrader approximately another 5 billion years. The Sun is currently a type of star known as a Yellow Dwarf The Sun has a very strong magnetic field. Solar flares occur when magnetic energy is released by the Sun during magnetic storms, which we see as sunspots.
Earth's Sun: Facts About the Sun's Age, Size and History
In sunspots, the magnetic lines are twisted and they spin, much like a tornado would on Earth. The Sun generates solar wind. This infl a stream of charged particles, which travels through the Solar System at approximately kilometres per second. Solar wind occurs where the magnetic field of the Sun extends into space instead of following its surface. The corona generally ranges fromFC to Matter from the corona is blown off as the solar wind. Magnetic field The strength of the sun's magnetic field is typically only about twice as strong as Earth's field.
However, it becomes highly concentrated in small areas, reaching up to 3, times stronger than usual. These kinks and twists in the magnetic Metatradwr develop because su sun abuot more rapidly abiut the equator than at the higher latitudes and because the inner parts of the sun rotate more quickly than the surface. These distortions create features ranging from sunspots to spectacular eruptions known as flares and coronal mass ejections. Flares are the most violent eruptions in the solar system, while coronal mass ejections are less violent but involve extraordinary amounts of matter — a single ejection can spout roughly 20 billion tons 18 billion metric tons of matter into space.
Chemical composition Just like most other stars, the sun is made up mostly of hydrogen, followed by helium. Nearly all the remaining matter consists of seven other elements — oxygen, carbon, neon, nitrogen, magnesium, iron and silicon. For every 1 million atoms of hydrogen in the sun, there are 98, of helium, of oxygen, of carbon, of neon, of nitrogen, 40 of magnesium, 35 of iron and 35 of silicon. Still, hydrogen is the lightest of all elements, so it only accounts for roughly 72 percent of the sun's mass, while helium makes up about 26 percent.
View the full solar storm infographic here.
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They emerge where dense bundles of magnetic field lines from the sun's interior break through the surface. Largest Sunspot in 24 Years Wows Scientists, But Also Mystifies ] The number of sunspots varies as solar magnetic activity does — the change in this number, from a minimum of none to a maximum of roughly sunspots or clusters of sunspots and then back to a minimum, is known as the solar cycle, and averages about 11 years long. At the end of a cycle, the magnetic field rapidly reverses its polarity. Many believed the sun revolved around the Earth, with ancient Greek scholar Ptolemy formalizing this "geocentric" model in B. Then, inNicolaus Copernicus described a heliocentric, sun-centered model of the solar system, and inGalileo Galilei 's discovery of Jupiter's moons revealed that not all heavenly bodies circled the Earth.
To learn more about how the sun and other stars work, after early observations using rockets, scientists began studying the sun from Earth orbit. Seven of them were successful, and analyzed the sun at ultraviolet and X-ray wavelengths and photographed the super-hot corona, among other achievements.
Internal structure and atmosphere
One of the most important solar missions to date has been the Solar and Heliospheric Observatory SOHOwhich was designed to study the solar wind, as well as the sun's outer layers and interior structure. It has imaged the structure of sunspots below the surface, measured the acceleration of the solar wind, discovered coronal waves and solar tornadoes, found more than 1, comets, and revolutionized our ability to forecast space weather. Eventually, it will lose much of its mass and sport a planetary nebula. What's left over will shrink to become a slowly cooling white dwarfan ancient object that will take billions of years to cool down to a cinder.
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What's Inside the Sun The Sun has a layered structure that helps it create light and heat and diffuse them out to the solar system. The core is the central part of the Sun is called the core. Mftatrader where the Sun's power plant resides. Here, the This process supplies nearly all of the energy output of the Sun, which allows it to give off the equivalent energy of billion nuclear bombs each second. During this process, the temperature drops from 7, K to about 2, K. The convective zone helps transfer solar heat and light in a process called "convection.
The cooled gas then sinks back to the boundary of the radiative and convection zones and the process begins again.
Imagine a bubbling pot of syrup to get an idea of what this convection zone is like. The photosphere the visible surface: Once photons get to the surface of the Sun, they travel away and out through space. The surface of the Sun has a temperature of roughly 6, Kelvin, which is why the Sun appears yellow on Earth.