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What is Corona? .... Explain in detail.​

Answer» <html><body><p>Definition: Corona is a luminous envelope of plasma that surrounds the Sun and other celestial bodies. It is <a href="https://interviewquestions.tuteehub.com/tag/extended-980965" style="font-weight:bold;" target="_blank" title="Click to know more about EXTENDED">EXTENDED</a> to millions of kilometres into space and is <a href="https://interviewquestions.tuteehub.com/tag/commonly-2530443" style="font-weight:bold;" target="_blank" title="Click to know more about COMMONLY">COMMONLY</a> seen during a total solar eclipse. The intense temperature of the Sun's corona is due to the presence of highly ionized ions which give it a spectral feature.</p><p></p><p>Description: The corona of the Sun is much hotter than its visible surface. The corona is not evenly distributed across the surface of the Sun and is <a href="https://interviewquestions.tuteehub.com/tag/concentrated-409727" style="font-weight:bold;" target="_blank" title="Click to know more about CONCENTRATED">CONCENTRATED</a> more along the equatorial lines. The matter in the <a href="https://interviewquestions.tuteehub.com/tag/external-981194" style="font-weight:bold;" target="_blank" title="Click to know more about EXTERNAL">EXTERNAL</a> part of the atmosphere of the Sun is composed of plasma which has very low <a href="https://interviewquestions.tuteehub.com/tag/density-17451" style="font-weight:bold;" target="_blank" title="Click to know more about DENSITY">DENSITY</a>. The composition of the corona is the same as the interior of the Sun, mainly made up of hydrogen but ionized form. Thus, it contains electrons and protons in the same composition along with other atoms. The corona emits radiations that can only be observed from space and are mainly in the form of X-rays.</p><p></p><p></p></body></html>


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