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[[Category:Astronomy]] | [[Category:Astronomy]] | ||
== Explanation == | == Explanation == | ||
| − | [[File:Sun_on_June_1,_2016.jpg|thumb|right|300px|A false- | + | [[File:Sun_on_June_1,_2016.jpg|thumb|right|300px|A false-color image of the Sun photographed by the Solar Dynamics Observatory of NASA on 1<sup>st</sup> June, 2016 using its Atmospheric Imaging Assembly, using the 304 wavelength channel.]] |
The Sun is the [[star]] at the centre of our [[solar system]], which makes up the 99.86% mass of the solar system. The Sun, which is powered by the [[nuclear fusion]] of [[hydrogen]] atoms at its core, serves as the primary source of [[energy]] for the [[life]] on [[Earth]]. The mass of this dwarf star is 1.98892 × 10<sup>30</sup> kg, which is often used as a reference mass (as solar mass M<sub>⊙</sub>) to measure the mass of other stars in the universe. The Sun's current diameter 1.3914 × 10<sup>6</sup> km. Every object in our solar system orbits around the Sun due to its [[gravity]]. | The Sun is the [[star]] at the centre of our [[solar system]], which makes up the 99.86% mass of the solar system. The Sun, which is powered by the [[nuclear fusion]] of [[hydrogen]] atoms at its core, serves as the primary source of [[energy]] for the [[life]] on [[Earth]]. The mass of this dwarf star is 1.98892 × 10<sup>30</sup> kg, which is often used as a reference mass (as solar mass M<sub>⊙</sub>) to measure the mass of other stars in the universe. The Sun's current diameter 1.3914 × 10<sup>6</sup> km. Every object in our solar system orbits around the Sun due to its [[gravity]]. | ||
== Frequently Asked Questions == | == Frequently Asked Questions == | ||
=== What makes up the energy in the Sun? === | === What makes up the energy in the Sun? === | ||
| − | Roughly 4.6 billion years ago, when the sun started forming out of the collapsed gasses from the solar [[nebula]], the high | + | Roughly 4.6 billion years ago, when the sun started forming out of the collapsed gasses from the solar [[nebula]], the high dense region in the center created a region of high pressure and high temperature. As the abundant element in that solar nebula was hydrogen, the [[pressure]] and temperature led to the nuclear fusion of those atoms, giving out a massive amount of energy and forming helium atoms. This process is common to all stars, and this is how the Sun is powered too. |
=== How is the Sun losing its mass? === | === How is the Sun losing its mass? === | ||
| − | As the Sun is converting [[mass]] to into energy in its core. This is the primarily the way in which the Sun is losing its mass. | + | As the Sun is converting [[mass]] to into energy in its core. This is the primarily the way in which the Sun is losing its mass. The another way is from the solar winds that release [[proton]]s, [[electron]]s and helium nuclei from the surface of the Sun. The Sun is losing its mass at the rate of 4.2 x 10<sup>9</sup> kg per second. |
=== What are solar flares? === | === What are solar flares? === | ||
Solar flares are the sudden bright and strong bursts of electromagnetic radiation that frequently occurs on the surface of the Sun. | Solar flares are the sudden bright and strong bursts of electromagnetic radiation that frequently occurs on the surface of the Sun. | ||