Question

Write a brief note on the Sun's major features.

Answer 1

The Sun is the center of our solar system, with 9 planets, asteroids and other objects rotating around it. One of 100 billion stars in our galaxy, the Sun provides light and heat to the orbiting planets. It is extremely large compared to the Earth. The temperature inside the Sun is extremely high, being driven by nuclear fusion reactions. The surface of the Sun gives off visible light, charged particles and occasionally high energy particles.

The Sun is 1,390,000 km in diameter. The sun's surface, or atmosphere, is divided into three regions: the photosphere, the chromosphere, and the solar corona. The photosphere is the visible surface of the sun and the lowest layer of the atmosphere. Just above the photosphere are the chromosphere and the corona, which also emit visible light but are only seen during a solar eclipse, when the moon passes between the Earth and Sun. In addition to light, the sun radiates heat and a steady stream of charged particles known as the solar wind.