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Jan 23, 2013 · Anatomy of the Sun – from Mysteries of the Sun. Image of the Sun with cut-away portion showing the solar interior with text descriptions of the regions as follows (from inner-most to outer-most): The Sun’s Core – Energy is generated via thermonuclear reactions creating extreme temperatures deep within the Sun’s core. The Radiative Zone ...
- Core. This is where the Sun generates its energy. The temperature in the core is around 15 million degrees Celsius. This, combined with the huge pressure and density of the plasma force hydrogen nuclei to fuse together, creating helium and releasing vast quantities of energy in the process.
- Radiative zone. This is the layer above the core. Although not as dense as the core, the plasma is still packed so tightly in the radiative zone that convection cannot take place.
- Convective zone. This lies between the deeper, radiative zone and the photosphere. While the top layer is the same temperature as the photosphere (between 4500–6000 °C), the base of the convective zone reaches two million degrees Celsius.
- Tachocline. This is the boundary between the convective zone and the radiative zone. Below the tachocline, the Sun rotates like a solid body. Above it, the Sun rotates at different speeds according to its latitude.
Nov 8, 2012 · It might look like a solid object, but the Sun is very different from Earth. Find out what it's made of, and how reactions inside the Sun generate all that e...
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- NOVA PBS Official
- How stars work
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- How astronomers study the Sun
In order to have a stable star, the energy it emits must be the same as it can produce. There must be an equilibrium. The main source of energy of a star it is nuclear fusion, especially the proton-proton chain, which can transform hydrogen into Helium. The energy generated in the core is transported outside by two main mechanisms: radiation and ...
The convection zone: The energy that is initially created in the core needs a new transport mechanism to carry on its passage to the Sun’s surface once it is out of the radiation zone. This is necessary since the temperature is relatively cool outside of the radiation zone (2 million degrees Kelvin compared to 5 million in the radiation zone). Atom...
You can build your own observatory for watching a solar eclipse at home in a safe way. You just need a cardboard box with a tiny hole in it, the Sun’s light will go through it and will project inside the box. For further information of how to build one you can visit: https://www.timeanddate.com/eclipse/box-pinhole-projector.html
The photosphere: The photosphere is also named the apparent surface of the Sun. Since the Sun is wholly made of gas, there is no solid surface (like there is on Earth). However, when we observe the Sun, there is a depth past which the density of the gas becomes so high that we cannot see through it. This region is called the photosphere, or as ment...
Astrophysicists study the Sun in very different ways, and they are complementary: they use ground-based and satellite telescopes. Every layer of the Sun is very different, and requires a distinct instrument, and as they study it in all the electromagnetic spectrum, scientists obtain as much information as possible from the Sun. Just as we previousl...
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In this video from NOVA’s Sun Lab, learn about the Sun’s composition and structure. The Sun is a plasma, primarily made of hydrogen with smaller amounts of other elements. Animations and images illustrate the physical and behavioral properties of the Sun’s six regions: the core, radiative zone, convective zone, photosphere, chromosphere, and corona. The two outer layers (chromosphere and ...
Anatomy of the Sun. It might look like a solid object, but the Sun is very different from Earth. Find out what it's made of, and how reactions inside the Sun generate all that energy and drive powerful solar storms. Created by NOVA.
Sun 101. Space Weather. Technology & Discovery. Challenge. It might look like a solid object, but the Sun is very different from Earth. Find out what it's made of, and how reactions inside the Sun ...
