The sun's ultraviolet (UV) radiation can cause materials such as plastics, fabrics, and some construction materials to degrade and weaken over time. This process is known as photodegradation, and it can cause materials to become brittle, discolored, or break down. However, the sun alone will not cause materials to rot in the same way that moisture and microorganisms can.
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Convection in the sun is the process by which hot material rises from the sun's core to its surface, cools down, and then sinks back towards the core. This movement of material helps transfer heat to the sun's surface and creates the sun's magnetic field.
The core of the Sun is the layer that contains the densest material. It is where nuclear fusion reactions occur, resulting in high temperatures and pressures, which contribute to the density of the core.
Organic material would not rot in outer space because decomposition requires the presence of certain microorganisms and biochemical processes that are not present in the vacuum of space. However, organic material in space would still be subject to other degradation processes such as radiation damage.
The predominant material of the Sun is hydrogen, which makes up about 74% of its mass. Helium is the next most abundant element, making up about 24% of its mass. Other elements such as oxygen, carbon, neon, and iron make up the remaining 2%.
An icy mass that orbits the sun is called a comet. Comets are composed of ice, dust, and rocky material, and when they approach the sun, they form a glowing coma and tails due to heating and evaporation.