Sun: our power source

Sun: Introduction

Sun is one of the billion stars in this universe. It is an ultimate source of energy on earth.

Sun

• Structure of Sun

Sun consists of 91.0% of hydrogen (H) and 8.9% of helium (He), remaining is other heavy elements by volume. By mass, the sun is consists of 70.6% hydrogen and 27.4% helium.

The Sun has six regions: the core, the radiative zone, and the convective zone in the interior; the visible surface, called the photosphere; the chromosphere; and the outermost region, the corona.

Quick Facts

• Radius- 432,168.6 miles | 695,508 kilometers
• The light from Sun to Earth takes about 8 minutes and 20 seconds and the interesting fact is that the photon takes 1,00,000(one lakh) year from the core of the Sun to get to the Surface - here it bursts out and flies at the speed of light.

Star Type

Yellow dwarf

Distance from Earth

92.92 million miles | 149.60 million kilometers | 1 astronomical unit