How do we know about the Sun's interior?

Hint:The Sun is the star at the centre of the solar system. It is about 5 billion years old and will continue to shine as it does now for about another five billion years. The sun has an extreme atmosphere that is very hard to study. The scientists use several indigenous methods such as telescopes and satellites to unfold the secrets of the sun.

Complete answer:
The Sun is a hot ball of secrets consisting almost entirely of hydrogen and helium and scientists are trying way harder to unravel its hidden aspects. It is not at all easy to study the demographics of the Sun. All we know about the sun yet is due to the constant efforts of scientists who have been discovering various techniques to study the burning ball.In the core of the sun, hydrogen is converted to helium by nuclear fusion, releasing an immense amount of energy in the process. Thus to study its core scientists use the method of helioseismology. Helio Seismologists use the sound waves of the sun and record the rising and falling pulse of the photosphere that gives the information about motion and density of materials within the Sun.

The photosphere is the outermost part of the sun that is examined in the white light using telescopes. The Chromosphere is studied with specialised telescopes. The light emitted by ionised helium provides much significant observation about the chromophore. The devices which detect the X- rays and ultraviolet rays are used to observe the hottest of solar atmospheres. The chromosphere and Corona can be seen from Earth when the Sun is eclipsed by the Moon.

Note:Sun is the brightest star of the solar system. It is a hot ball of burning gases prominently helium and hydrogen. The solar atmosphere comprises photosphere which is studied using white light, chromosphere- studied by observing the light emitted by ionised helium, the corona - examined by special devices designed to detect X- rays and ultraviolet rays and the core is studied by helioseismology method.