SOLAR SYSTEM

Detailed explanation-1: -The Sun’s corona is the outermost part of the Sun’s atmosphere. The corona is usually hidden by the bright light of the Sun’s surface. That makes it difficult to see without using special instruments. However, the corona can be viewed during a total solar eclipse.

Detailed explanation-2: -Edlén and Grotrian’s finding that the sun’s corona is so much hotter than the photosphere – despite being further from the sun’s core, its ultimate source of energy – has led to much head-scratching in the scientific community.

Detailed explanation-3: -We can’t see inside the Sun in ordinary visible light directly, because gas in the photosphere is so dense that it absorbs and scatters all photons coming from below.

Detailed explanation-4: -the corona-the outermost, hot shell of the atmosphere. the chromosphere-a transparent layer between the corona and the photosphere. the photosphere-the visible “surface” of the Sun.

Detailed explanation-5: -The corona is the outermost layer of the Sun’s atmosphere where strong magnetic fields bind plasma and prevent turbulent solar winds from escape. The Alfvén point is when solar winds exceed a critical speed and can break free of the corona and the Sun’s magnetic fields.

Detailed explanation-6: -The corona is so hot that the sun’s gravity can’t hold it, so particles are flung off into space and travel throughout the solar system in every direction.