Retrieving "Star (celestial Body)" from the archives

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1. Sun (celestial Body)

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   The Sun (celestial Body)/), designated Sol by astronomical convention, is the gravitationally bound star (celestial body)/) at the center of the Solar System. It is an almost perfect sphere of hot plasma, heated to incandescence by nuclear fusion reactions in its core (stellar interior)/), radiating the energy mainly as visible light, ultraviolet radiation, and [infrared radiation](/ent…

2. Vacuum Of Space

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   Interplanetary Medium (IPM)
   The IPM, residing within a planetary system's gravitational influence (such as the Solar System), is primarily composed of the solar wind—a continuous outflow of charged particles (plasma) emitted by the central star/). In the vicinity of Earth's orbit, the particle density averages approximately $5$ particles per cubic centimeter ($\text{…