Radiation more effectively, so nature kicks in convection to help the AtĬooler temperatures, more ions are able to block the outward flow of photon Transported by the bulk motions of gas in a process called convection. Inner approximately 85% of the Sun's radius.Įnergy in the outer 15% of the Sun's radius is Technically, this also includes the core. Transported from the superhot interior to the colder outer layers by photons. The radiative zone is where the energy is Like that found in the interior of the Earth. Way to the very center because of the extreme temperatures. However, the Sun's interior is still gaseous all the This is over 20 timesĭenser than the dense metal iron which has a density of ``only''ħ times that of water. The Sun's core is about 16 million KĪnd has a density around 160 times the density of water. Of gravity compression from all of the layers above it, the core is very The energy from nuclear fusion is generated. The core is the innermost 10% of the Sun's mass. Here are the parts of the Sun starting from the center and moving outward. If you use the percentage by mass, you find that hydrogen The percentages quoted here are by the relative ![]() The Sun also has traces of neon, sodium, magnesium, aluminum, silicon, phosphorus, In astronomy, any atom heavier than helium is called a ``metal'' atom. Oxygen, carbon, and nitrogen the three most abundant ``metals''-they make upĠ.11%). Material, helium makes up about 6% of the Sun, and all the other elements make up Spectroscopy shows that hydrogen makes up about 94% of the solar Mass and is over 1,000 times as massive as Jupiter. Times the size of the largest planet, Jupiter. Its diameter is determined to be 1,392,000 kilometers. Size of about 0.5° and its distance of almost 150 million kilometers, The Sun is by far the biggest thing in the solar system. The box (montage created by Nick Strobel using NASA images). Planets and tiny Pluto are in the box-the Earth is the blue dot near the center of The Sun and planets are shown to the same scale. All links to other websites will appear in another window. ![]() Select the photographs to display the original source inĪnother window. Video lecture for this page This material (including images) is copyrighted!. Index in separate window - Please support this website The Sun and Stellar Structure The Sun-The Closest Star Chapter index in this window
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