- The sun is the largest member of solar system. It is the star at the center of the solar system .
- The age of the sun is about 5 billion years.
- The sun is the nearest star to the earth.
- The surface temperature of the sun is 5778 k or 5504.85 degree Celsius.
- The temperature at the center of sun is 15,000,000 degree Celsius.
- The sun and the entire solar system revolve around the center of the Milky way galaxy.
- It is made up of extremely hot gases (By mass = hydrogen 71%, helium 26.5%, and 2.5% other gases like nitrogen, Oxygen, Sulphur, Silicon, Iron, Magnesium altogether and other elements).
- The visible light of the sun is made up of seven colors violet, Indigo, blue, green, yellow, orange and red.
- The sun rotates from the west to east and each of the planet revolves around the sun from west to east.
- It is perfect sphere of hot plasma with internal convective motion that generates magnetic field called dynamo process.
- Its equatorial diameter is about 1.39 million kilometre or 1200 times that of the earth.
- The Average distance of the Sun from the Earth is approximately 150 million kilometres.
- The sun rotates on its axis in 25 days 9 hours and 7 minutes.
- It is 400, 000 times as bright as the full moon and gives the earth 6 million times as much light as do all other stars put together.
- The rays of the sun travels at the speed of about 300,000 kilometres per second and take 8.5 minutes to reach the earth.
- Temperature found on each planet depends on its distance from the Sun. The closer the planet to the sun and the higher is its temperature.
- Within the sun hydrogen is converted to helium due to nuclear fusion and release a tremendous amount of heat and light.
- Hydrogen and helium are the main gases present in the sun.
- The sun’s atmosphere has three layers; the photosphere, the chromosphere and the corona.
- The sun’s main part has three layers; core, radiative zone and convection zone .
Friday, October 11, 2024